I think we need to keep block installation out of the editor itself (since blocks are going to go beyond the editor Real Soon Now), but I would far rather have 30 plugins that just do one thing than 3 plugins that do 10 things each--especially when 9/10 of those things are the same.

It's not how many plugins you have, but how well each is coded and whether there are conflicts. I want to be able to add just the blocks I need.