OK, I respect MP 100% for what he did to Prog Metal (and he inspired one of my fav drummers), but, I said sometimes, his only good performance, to me, is WDADU, and the only time he sounded good (hate his overly loud drums).
The problem with overplaying is not overplaying per se, is that MP knows like 5 or 7 fills, and uses them everywhere. To the point I could make a MP drums generator sampling the BC&SL stems. Just look at Blake Richardson: dude adds tons of fills and syncopated lines, but his style is so diverse it feels fresh every time. Mangini did the same exact thing on TA: syncopated lines, blast beats, Pop 4/4 (ANB), odd time signatures, and even Broadway musical drum fills (Wicked comes to mind).
I understand why people prefer MP, but, I have never been a fan of his "clown+llama" style, not at all. Since MM joined the band, they seem to have a chill vibe; man, they're old, they can't follow the Rock & Roll life forever (that only works for The Rolling Stones, haha).
Mangini is superhuman, not only with his speed, the band chose him for a reason. Marco Minnemann is also one of my favourite drummers, but, his style doesn't fit in DT at all; he's improvisation-friendly and you can see that, and DT is like the opposite of that nowadays.