When you built an important app with lots of bloks, it become difficult to remember where are blocks you need to modify
I think it could be interresting to add a find tool (Ctrl F) but i have seen that it was already disccussed in other posts...
for my mind i'd be interresting to to identify blocks areas as in this exemple
I think too it 'd be good to be able to select several block'sgroups in order to move it in one moving.
I don't know if someone is in charge to improve AI but if yes may be it could have a look...