Twin Snakes is a worse game if just for the absence of a tight direction. MGS isn't MGS2, and because the game wasn't totally redesign the MGS2 mechanics simply broke the experience in favour of the player.
But all that really does is make the game brokenly easy. It's bad, but it's still very much playable, and looks really good to boot.
Cutscene changes didn't bother me. 99% of the game is identical and accurate, and changes made to Mei Ling and Naomi were canonised via MGS4. Athletic Snake was dumb but whatever, it made for silly cheesy cinema, and all the cinematography was quite excellent.
People would remember Twin Snakes more fondly if it was handled internally at KojiPro, and not Silicon Knights, was more subtle in changes to the cinematography, and didn't have brokenly easy gameplay (aka: the game was totally redesigned to accommodate MGS2 mechanics).
EDIT: MGS also has a hugely recognisable and iconic legacy, so much so that really any changes made to the cinema and gameplay would probably be frowned upon. It's like Ocarina of Time: everybody barked for remakes, but nobody really wants the game "remade" at all, they just want a new coat of paint. Unless MGS was remade mechanic for mechanic, shot for shot, only a new engine with new modern assets, there would be vocal complaints I think. Hell, you'd probably still get them.
Am I the only one here who actually liked Chico from Peace Walker? Very few seem to share this sentiment
Chico was fine. I also didn't mind Paz, as stupidly cliché as her character was, and Kaz is amazing.
The cast of Peace Walker didn't really bother me (including the hilariously named Hot Coldman) so much as the direction of the plot and continued circle jerk around The Boss. The story is just dumb and stupid and not really memorable for any good reasons. And this is on top of having the weakest, bizarrely non Metal Gear-like gameplay in the series.
I said it in another thread, but for all the shit I give MGS4 at least it was a distinctly KojiPro game. The first two acts were really good, and though the rest of the game went to shit there was still that unmistakable MGS/Kojima touch to the experience. Even at it's worst, the parts I hated, were distinctly Metal Gear. Peace Walker is just a soulless experience and a poor vision for the franchise.