Yeah BT Hounds alt mode is great, but the bot mode is clunky and not that much like his cartoon self.
I'm not sure what you mean about MP Optimus, in terms of the details finish and engineering I feel MP 10 and the other recent toys can be considered of a Masterpiece standard. I wont deny that 10 years ago when Binaltechs highend TF toys were out such standards might have been higher. But compared to the standard of todays main TF lines I think the MP tag can be justified.
If they renamed the MP line to just Transformers toys, I guess they have to call today's main lines like Combiner Wars the KO quality line.