Yes I agree with this. Mixing many subreddits together initially will mean people will see each others' posts. Also it's interesting to see this approach on beehaw compared to the plethora of empty communities that's already on lemmy.ml which allows their creation.

Maybe the key is to do a Lemmy instance for the general and then sublemmies for the specific. The folks on lemmygrad seem to have figured it out in the sense that they have the whole instance dedicated to Marxism, and then all of the specific flavours like anarchism are sublemmies of that instance

Yeah, I'm in for that. I used to be only about Pathfinder 1e. But now I've exposed myself to 1e, starfinder, 2e, blades in the dark, Delta green, lancer, traveler, 40k death watch, and probably a few more I'm forgetting. Branching out to ask these other systems has made me a more flexible gm, and only served to expand the tools in my toolbox

a general TTRPG community instead of visiting dndmemes would be great. Just needs a good name that is easy to find.