I had the opportunity to play this at GamesCom.
I'm not one to trash games, I would rather not say anything, but unfortunately this game was not very good. I'm a huge fan of the original on N64, both I don't revel in rose tinted glasses, I understand that it doesn't play well today.
With that said, my three complaints with the PS3 version which I had the chance to play wer:
1) Muddy textures.
The textures were downright ugly in many instances. It was clearly a port, based on the appearance alone. This however, I can live with. What I cannot live with though:
2) Brain dead AI.
Yes, AI is difficult to program. But the fact that I could walk up behind someone, bump into their backs numerous times, and have them be completely unaware, is unacceptable.
3) Buggy.
Despite clipping through walls, I had to stop playing the game because it.....crashed in the middle of a level. Just froze in place, and the gentleman had to come over to unlock the PS3 and reset the machine.
I still have high hopes for the title. If they spend another 9-12 months polishing it up and correcting these problem, then I could certainly see myself purchasing it. $60? Absolutely not. $40? I would certainly consider it.