Another issue with blocks is that there is now a lot of bloat being generated. Users may only be looking for a single block and end up installing a plugin with 20 of them or so loading all their assets onto every page.

I think that there needs to be a smarter and more standardized way of handling block assets. IE if there is a slider block if you would its assets are only loading if that block is being loaded.

As for the block management, I can see the use of such a feature but I think it's looking to fix a problem that shouldn't really exist. Plugins should quite frankly stop bundling 20 blocks into a plugin