The main problem with this new app, besides the usability issues Michael has mentioned, is the use of "sketches" instead of individual curves, which do not have grouping(and group operations) forced upon them; this and, as already mentioned, 3d curves.

"Spaceclaim", what I use as a companion to MOI(its possible to copy and paste surfaces and curves directly from MOI - SC has native 3DM export), is similar, but does it the right way: