Chilling effect, RE. You might not want to post on threads you find ridiculously subjective.
Maybe it isn't subjective, though, Mike, that's why I ask the criteria for "dripping flavour". I particularly ask because calling stuff like Tieflings and Warlocks "niche" and suggesting they have flavour without noting that stuff like Halflings and Gnomes are pretty "niche" and certainly just as rich in "flavour" (by which it appears he might mean "specificity") seems a bit strange.
But maybe I just don't understand the criteria, which is why I asked. If was certain it was agenda-y, I would have ignored the thread. Sadrik may well mean it completely agenda-free and just accidentally have selected controversial examples rather than just listing all the "flavourful" stuff.
Anyway, in the end, D&D is full of things which seems to me, without clear criteria, as "niche" and "flavourful" as those on the list - here are just a few examples:
1) Paladins
2) Clerics
3) Halflings
4) Gnomes
5) Druids
6) Monks
I could go on, but I think you get my point - those are things with very high degrees of specificity. You could even make a case for Vancian Magic itself being on the list - D&D managed without it for an entire edition (and of all the "Why I didn't play 4E" or "Why I disliked 4E" answers, I've almost never heard "Lack of Vancian Magic" as a major factor - I'm sure it was for a few people, of course, everything is for a few people), after all.
(PS - I actually like most of the above things, and often play Paladins, but they are, realistically, very "flavourful".)
I really think that once you get past Fighter, Rogue and Mage, and Human, Elf, and Dwarf, you're outside the "fantasy basics" - D&D has settings with no real Clerics, for example, or settings with no Paladins (several, iirc), others without Gnomes (as we know them), or without Halflings. Monks are absent in loads of settings. Druids in some. Even Fighter, Mage and Rogue, and Human, Elf, and Dwarf have been severely modified in certain settings, because they have flavour which wouldn't fit with the setting otherwise.
Looking at the specific questions Sadrik asks, let's see if we can answer them:
1) Does this enhance the experience of players and the DM to "have them" (which I assume means, "attract and keep players")?
Well, yes, in my experience, very strongly yes. Players are attracted to strong ideas, in my experience, and thus things with high specificity often have very high appeal. There's always the odd guy who wants a totally nondescript class, but hey, that's what Fighters are for eh? I'll be hear all night folks!
I mean, the first PC I ever played, given the choice of anything in the 2E PHB, and in the 2E FRA, was a Speciality Priest of Mask - hugely "flavourful", and hugely appealing to me. Indeed, FR speciality priests seemed to attract a lot of people - people who never, ever play a generic "Cleric of the Gods" or the like.
As for DMs, I think it helps, because more options with more "ooomph" means you're more likely to get a player genuinely excited. Whilst some people can really get excited about say, an Elf Ranger, others tend to get excited about more specific things, like a Half-Orc Cleric of the God of War, or a Tiefling Evoker, or a Drow Monk, or whatever. People can roll out the lazy, nasty "special snowflake" venom, but in the end, most people aren't motivated by the desire to be special, but rather they find a particular combination of characteristics that excites them, and given the vast array to choose from, it's unlikely to be a "vanilla" combination.
2) Does it detract?
I don't see how it does.
3) Will it be hard for a DM to say "No Drow"?
Not if he's playing his own setting which doesn't have Drow in it, no. 5E isn't doing what 4E did, and saying "Everything is Core" and "Find a way to say yes" (things I objected to about 4E, not, despite being labelled a 4venger lolz), it's very upfront that any group is going to personalize things. I do think a reasonable DM will be reasonable, and not foot-stamping about race inclusions - but if there is really no way, then it's not hard to say no. I've said no to countless races and classes, even in 4E, without fallout, because I'm polite about it and make the reasons clear, and if there are no good reasons, I don't say no. It's not a terribly difficult situation.
The only time it could become difficult is if the DM has a world with plenty of Drow, but is refusing to let a player be one, and isn't articulate enough to explain why in reasonable terms - but the real problem there is that the DM isn't articulate and socially adept, which is always a big problem in a DM. I mean, I had to say "no" to Halflings when running Krynn (well, only one, but still), for example - and they aren't listing as having "flavour", but really, they do. In the end though, it's not a problem, because you work it out like reasonable people.
4) Will it be hard for player to accept "no" about certain elements?
Depends on the DM's social skills and the player's maturity, I suspect.
We've been saying no to stuff, including Wild Magic, for decades. It being in the PHB does not make it particularly more difficult UNLESS you, as the DM, make it part of the world, something NPCs can have, but don't let PCs have it, and don't have the degree of articulate-ness needed to explain the reason for that situation (or have a godawful reason - it does happen from time to time - in which case maybe consider being reasonable? Just sayin'). I mean, does the fact that Paladins are in the PHB cause a problem when I'm running Dark Sun and you can't be one? Well, no. Or running Taladas in Krynn and you can't be one? Again, no. It's just a thing.
In casting a wide net, WotC are being very smart. They are avoiding people feeling really excluded, and they empower DMs to make decisions for their own campaign and setting. It really is pretty easy to say no, so long as you remain polite, transparent, and reasonable, and giving you more to pick from is good.
I mean, it's pretty cool that when I think "What are we missing?" only one thing comes to mind - Warlords - and we're told there will be a Fighter subclass for that - I believe it when I see it, but y'know, that's better than any other edition, way better. Even 4E had no Bards or Druids in PHB1, and that was a noticed absence (Barbarians and Monks less so, much as I love them).
Is that more clear?