OK so it just the little things that should work but don't.
Draw a circle profile, draw a line profile........ Now try to loft..... Surface or Boss.......ARGH!!!!!!!!!! If you can loft to a "point", and this is just my crazy thinking, then a line should be possible as well.
Make a cube, Shell it................Now try and find a way to pick the inside surface so that you can offset it at 0" (essentially a surface copy) without having to do some work around to select all.
Give the option to have "merged results" turned off for Base features, without the work around of having to do a weldment first.
Sweeps with 3D Sketching (ie profile, path and guide curves all in one sketch like lofts and boundary surface)
Ok thats my rant for this morning, I think i just out on the wrong side of the bed......