Here are few interface and usage related topics I think the 3D sketch engine really should address
and improve upon:
first when I click on a tangent handle I should be able to move it at least with the move commant. nope need to activte the handle frist
second moving via dragging in a 3D sketch aint working need to use the move command
third the handle cannot snap to anything
forth I cannot later easily move the fit point of a spline causing major head pain and making me simply redraw the sketch a discard it
here is a video:
https://drive.google.com/file/d/0Byzv_NlyKp_2SkVnM1EwS21PMUE/view?usp=sharing