In one of the twitch stream the UE4 developers mention they do want to improve the brush tools.
One thing I’d love to see in UE4 is something like the push/pull tool from SketchUp: ?v=uOrfZM6nY-U and some nice align tool would be useful: ?v=gicG_Y0GEM8 I dig the way align tool is implemented exactly like more Adobe illustrator does it but in 3D.