I think with the influx from reddit, which gathers a lot of technical users (which I think are also among the first users to migrate), I can see lemmy getting a lot more contributors in the coming days/weeks.
Among the features I’d love to see happen, some would also address your concerns about the lack of centralization :
While it’s very similar to botw, it fixes a few things and introduces a lot of new fun mechanics. If you enjoyed botw, there is no way you don’t have fun with totk.
The last two Zelda games (especially totk) lets the player get really creative as well
I don’t think a “main” instance is something we want. If one instance completely takes over the whole federation, we will have another reddit debacle in a few years.
While Decentralization is not a silver bullet against monopoly (just look at what gmail did to e-mails), centralization seems to always kill independence once platforms reach a critical mass