There is no such thing as a halo expert.
Not only did you completely mess up the plot, but you made it that they were sopposed to be halo experts. Halo isnt a game of skill, whoever grabs the best weapon wins, and whoever spawns near that weapon grabs it. Take it from a legit 29, there is no such thing as a halo expert. Sure, I can kill ten guys with dual SMGs using just a BR, but I am not an expert, I just shot them from far enouph away and took advantadge of one of them reloading, so what.
Bottum line, Halo and Halo 2 suck. It requirs no brains and it all has to do with three factors 1: who your team is, not to be paired with noobs and betrayers. 2: to spawn close to the good weapons.
3: to have idiot enemys that all charge blindly with SMG's.
Take it from a level 29.( in team skirmish, im level 24 in slayer and 19 in big team battle and 11 in team snipers and 4 and below in everything else. ) Dont play halo, once you get to a high level, everything you worked for goes to waste. Do us all a favor and play Counter Strike or Splinter Cell 3.