I dont know what 343 is, but im guessing its a game developer... But if they made it a good version, YEAH!
The game was legendary, i still have my copy from way back, and yes, i do play it every know and then :)
It has some amazing levels on it, which would make amazing multiplayer maps if they DID pull it off.
But, no HALO will ever beat Combat Evolved, the game was an instant classic, and oh did it deliver. For its time, the graphics were outstanding, toped off with amazing gameplay, and a truly film worthy story-line :D
And yes, an updated HD version woud be nice too :)