I don't quite follow you, 3DC exports color, specular, normalmap, displacement as separate maps when you use file->export model. (?)
You can't paint bump but you can use normal-map which is quicker and more powerful & effective anyway.
Loading meshes - bit of a general statement that, but I have had the odd issue that I've overcome almost always by choosing different options on the load-object screen, or creating a better UV map before importing.
My personal thoughts on what I'd like are more features for the low-poly crowd, architectural instead of organic features for example. I'm not as excited by volumetric sculpting myself but welcome the new feature as I understand once implemented Andrew does want to create some more low-poly tools for us.
Good things come to those who wait