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Why does, or should, poser need to remain a hobbyist's tool? Why can't they accomodate both? 

 

Three reasons:

1. You cannot jump a chasm in two leaps, and

2. The code team ain't big enough to pull that off.

3. The UI would need a massive overhaul (and the ghost of Kai Krause exorcised) before it would be considered pro-level.