I have a site idea but I don't know it it's appealing. It may be more casual-creator oriented than the kind of hardcore homebrewers that seem to be here. I have a feeling everyone is kinda experienced and comfortable with their tools, already able to complete full books independently. I'm from...
What Time Is It feels kinda strong. But I'm in a party that has a lot of melee, and summons a lot of creatures, so it would probably just be must-use for me.
I feel like the target should gets +1 to save per adjacent enemy.
I feel Rule 0 is the cleverest mechanic.
I can't otherwise think of something else where I went "Ah, neat. Good way to do it." out of being generally impressed with the elegance and effectiveness.
I'm not sure if that's D&D-specific or shows up in every system already.
It kind of sounds like something Conan-esque would be desirable. Something without a lot of magic. I'm in a D&D 3.5 pirate campaign that play that way by simply pre-veto'ing anything magical. The party is loaded up with lots of mundane oddities we never considered before like Splintering Bolts...
One approach which may help in figuring out non-combat activities is to approach the game from either playing as, or DMing for, a party of commoners. I'm in a commoner campaign right now and it has definitely pushed us outside the box of normal D&D. We now know what the overland fatigue rules...