Click and drag block placement

[Mia]

The ability to click and drag to place blocks in the level editor! I always wished PR2 had the ability to do this (In PR2, you have to move the mouse back and forth).

[Northadox]

I suggested this feature a long time ago for PR2, but I guess I should echo that for PR4, as well.
It would also be good if this applied to art, so you could easily move all things, not just blocks!