When I select components of a blueprint in the normal editor viewport I get a “Blueprint components must be edited in the blueprint” message. (under the list of the +add component button) So every time I want to edit things inside it using functionality like vertex snapping I would need to create the blueprint again. All the snapping features except the normal increment snapping seem to work only in the normal editor viewport. So those would great to have in the Blueprint viewport as well.
The problem I currently have is that the more complex assets I import from PhysxLab have their pivot mangled with values like 43.34252 and for physics objects I need to place everything perfectly together. So grid snapping is useless and I need to use vertex snapping instead which I can’t in a BP. I also can’t redefine the privot in UE4. Like setting the pivot to be centered like you can in 3DsMax. That would be also a great feature to have.