Unfold3D - (Maya, 3dsmax and and and)

2. No, you can unwrap everything and more :-).
3. Maya has pretty good UV tools, especially after recent update. It even has Unfold3D packing algorithm, so you could be more than fine within this software. Max, IMHO, a bit complicated with UV. For instance, if you want to see UV's of a mesh you need to add a separate modifier and than, if you collapse everything, you would need to add this modifier again.

I'm modo/zbrush user and since working with stand-alone Unfold3D, I can say that it's worth the investment. I love the support, UI, packing and selection tools and how fast it generally is.

Don't be angry, please :-). You cannot say that for all game companies. It depends on many factors, even on what engine does the studio use. Let's say, there are studios that are strictly Maya-centric, because their game engine editor is implemented in maya directly (naughty dog etc), but others, who use UE4, Unity etc don't care what software you use as long as you providing good mesh and textures to the game engine. So, in the end, it's up to your workflow. Many indie or mid-range studios are on blender (bad UV tools), some are on Modo (ok UV tools) so Unfold3D might be a good boost.