Juergen Timm - The "r" in my first name is silent - spoken like juegen. Family name is pretty old german, comes in some variations and means carpenter iirc.
pior - IIRC a modded 360 can use regular hard drives, instead of paying a ridiculous $150 for 120gb. Though imo that's not worth being banned over, hah.
It's quite simple (From their standpoint): Whenever someone sees something of theirs for free, it means that they lost a sale ;) Thats how it is, in that little mmorpg-vs-irl world they live in. :)
Speetree is packing its textures in a way that can be read automatically by speedtree materials inside Unreal. Roughness/glossiness is in the alpha channel of the normal map. AO is baked into vertex color IIRC.
Autodesk were pretty clear iirc. If you are contracted to provide a specific asset or number of assets at a specific cost then you're ok If you are contracted to work for a period of time you're not
Droplets work great. You might also try these tools. IIRC some of them let you choose a size on export too http://wiki.polycount.com/wiki/PhotoshopTools#Export_Tools
Usually the export tools need to be recompiled for each version of Maya iirc. They'll get a release for Maya 2016 once it's out (but it might be a couple of months before they're released.)