Your players decide to give up the adventuring life and hope to open a shelter for stray dogs in a city they haven't been to.
Sure. First off, assume we're talking about my Majestic Wilderlands. Next, realize that while I wrote a book on one aspect of what I do, I didn't cover everything, and I could talk for hours on this stuff. So if it doesn't seem like I covered something, ask questions.
First,
While "opening a shelter for stray dogs" is in the realm of unlikely but plausible, "going to a city they haven't been to" is highly implausible. The players know they have zero social connections, little information, and thus the work they'll have to do is considerably more compared to places they do know and have connections in.
But hey, let's say they decide to do that. Not only that,let's also put on the table that they're a bunch of ex-mercenaries who managed to capture a king and sold his ransom to the ruling prince of the realm they live in. So, funding and social permission are not a problem.
Incidentally, that describes what happened in one of my campaigns. Specifically, these folks:
GURPS Majestic Wilderlands Update #1
However, instead of a stray dog shelter, they chose to build an inn.
The overview of the campaign is described in these two posts. I never got around to writing the third, but that’s okay because it dovetails into the answer to your question:
The Nomar Campaign Part 1
The Nomar Campaign Part 2
What would be your procedures for generating content?
If it's from scratch, basically what I described in
How to Make a Fantasy Sandbox.
For the dog shelter in the city, I’d look at whatever notes I have on the city and start at Step 25:
A Fantasy Sandbox in Detail Part XVII
After that, I have enough sketched out about the city to handle the party going there and doing the research needed to figure out how to set up a dog shelter. Beyond that, what gets fleshed out depends on player choices. I use the techniques I outlined in
How to Make a Fantasy Sandbox plus a stack of aides and random tables I cobbled together from Harn, Ars Magica, D&D, Judges Guild, and my own creations.
When I was younger, I would create most of it based on what I thought was plausible, interesting for the party, and consistent with my worldbuilding. But for the past two decades, I’ve used random tables to get me thinking outside the box about what could plausibly exist in a given place.
The only bias is that I keep tabs on what interests the players. So the most detailed prep goes into the stuff I know various players will go for first. For example, in my current campaign, one of the more proactive players is a member of the Cult of Kalis, a blood goddess of assassination. So I make sure any prep I do for wherever the party is headed includes notes on the Claws of Kalis (if any) in the area. Likewise, there's an elven merchant in the group, so I make sure I have notes on local merchants and trade opportunities,because I know he'll be looking for them.
This stems from an observation I had while traveling to major cities for special technical assignments at the manufacturing company I work for. In Chicago, New York, Pittsburgh,walking around surrounded by signs and hundreds of people,what catches my eye? The game store on 33rd Street. Never mind the hardware and lock store on the left or whatever is behind building #13 on the right. The game store is what I focus on.
And players do the exact same thing (most of the time) when visiting a setting pretending to be characters having adventures. When the day comes that a player decides on the spot to open the door to Admore Hardware & Lock Co. or explore #13 33rd Street, then I’ll whip out my dice, make a couple of rolls, and figure it out.
In the case of the Nomar Campaign, the players went to Dorn, the capital of the Principality of Nomar, and spoke to Prince Artos' Chancellor. They showed him the writ Arto gave them, collected some of the reward in coin and the rest as a promissory note. The Chancellor sent them to his clerk, who handled land claims. They picked out the parcel they wanted to use,which was the crossroads marked with an “N” on this map:
Each Hex = 12.5 miles or 5 leagues or 5 hours of walking across level ground.
Why an inn? You’ll have to ask the players,Delvin, Aeron, Durgo, and Kermit,who were still playing. Cei Kerac and Henry Keifer's players dropped out due to real-life commitments. The remaining players hashed it out among themselves before going to Dorn to present the writ. They batted around a few ideas until someone said, “How about building an inn?” That idea gained traction, and everyone voted yes.
Why the crossroads? That was straightforward. There was nothing there, and it would have more traffic than anywhere else in the Principality. Plus, the land belonged to the Prince, so it was his to give.
Once that was all settled, I ended the session a bit early and spent the following week fleshing out my notes on Oxcross, Bellsdale, the Plain of Cairns, and Pineshow.
One of the things I'm curious about is, sandrasan, a living world advocate of some small fame, would prep exciting dog related things but if I'm understanding you then you don't do this? or maybe I'm misunderstanding.
Not familiar with sandrasan. So I can't answer that question. As to what I do, you can ask further questions like you have above. As well as look on my blog. Also if you have something that links to sandrasan I will take a look.
A blog on 40 years of gaming and Sandbox Fantasy.
batintheattic.blogspot.com
I consolidated my Managing Sandbox Campaign posts here
This is a master index of all my posts on managing Sandbox Campaigns. How to Make a Fantasy Sandbox Note that at the bottom of the post ar...
batintheattic.blogspot.com
I would look at the ones that talk about building a Bag of Stuff
I will get around to doing the same for my world building posts after launching my Majestic Fantasy Realm KS.
I also I have bunch of free downloads that are a diverse collection of finished and semi-finished works.
h2 style="text-align: center;"> Stuff in the Attic Box of Majestic Fantasy Stuff Majestic Fantasy Basic Rules Version 10 Basic Rules for...
batintheattic.blogspot.com
One thing I would using for building the city the stray dog party is heading too is my Fantasy Demographics article.
Plus my Building a Feudal Setting series.
A blog on 40 years of gaming and Sandbox Fantasy.
batintheattic.blogspot.com
Like I said above feel free to ask further questions.