This sounds to me like a long-term project that has many uses, but Obsidian is not a major one of them anytime soon (I’m assuming here that Vim mode on mobile is a niche).
But since there will be a switch eventually (CM6 is the future of CM, that’s for sure), it certainly needs long-term attention. I might be able to do that but only in a few months when other big free-time projects get cleared up.