As a taller person, if this gives me sufficient legroom and a seat that actually distributes the weight over my whole thighs such that I can sit somewhat comfortable, this seems like a major upgrade to me.

Those need a entirely different type of help.

A cool feature would be an opt in community federation. So two aligned communities on different instances can “friend” each other and will be synonymous. If one instance disappears or one community is closed, the other will be represented as the original synced whole.