I think we are going to limit ourselves to the next leap if we are tied to bootstrap. For me, I've never adopted it at all. Bloat. I create my own stuff, albeit based on others suggestions.
But now we are looking at the next giant leap to the new CSS Grid. I admit I am struggling with it, but I am making progress.
So in my humble opinion, WA has to disconnect from any and all frameworks and just do the mysql/php code to insert ... I don't need "cool" css for the back end..I just need the queries to work... We can write our own css with a little effort.. or at least I think we can, having been spoiled with the backend.