As former R&H employee, do you find blender to be usable or are there big missing features? Does it's open source nature make it more usable because you can pat

As former R&H employee, do you find blender to be usable or are there big missing features? Does it's open source nature make it more usable because you can patch whatever you want, or are things like Maya customizable enough? Blender and Maya are both scriptable in Python. Blender uses Python 3. Would you say Python 3 was a good decision?