I heard that there were a few perks that the PC community are getting such as a few more multiplayer maps, online gameplay (which you can do on the Xbox through XBconnect), and a couple of other minor things...But I also saw a quote from Bungie and the other dev doing the port that the "gameplay" itself did not change, that it was just a little more balanced in areas. Can you provide a link to the article that you're speaking of that talks about the teamwork aspect?
If it's "alot better" so to speak, I'd might look into getting it for the PC, too. But there's nothing like kicking some butt in Halo on a 55" HDTV with digital surround sound from the comfy leather recliner, if you know what I mean....
What is their projected release date for Halo/PC?