It has its issues, all of which have been stated in this thread already.
None of those issues stop it from being one of the greatest toys I've ever purchased. The absolute majesty of the thing can't be overstated. I have both the 1st NA release MP01 (with chrome and "battle damage") and the MP10, and I honestly prefer the 01. Sure, the MP10 is more cartoon accurate, but it's also several inches shorter, diminishing its presence. MP01 is massive, it's boxy, it's clumsy...almost as if it were a truck that turns into a big fuckin robot.
Basically, it's the 60's Ferrari of the Masterpiece line. All of its flaws are simply a part of its charm and beauty. Is it as "good" as current offerings in terms of performance or comfort? Fuck no. Is it any less fun to drive? Absolutely not.
Get one (the MP01, not the Ferrari; unless you can afford both).You won't regret it.