My feedback regarding the presentation is that I think there should be slightly more focus on why one would choose rqlite over say sqlite. That probably means more info on the distributed part.

I happen to know raft and the kind of problem it solves, but the average reader might not. A practical demonstration of the problems it solves might be in order.

So that also means describing for whicj applications rqlite is more wellsuited (and for which it might be worse) than other databases.