Is there anyway that we as a community can help 343? i know we are halo fans, we buy games, novels, etc.
Is there anything coming up that 343 needs help with like a report on improvements to the multiplayer system? Or perhaps a round of applause for their work?

For Halo CEA? Probably zero. It’s so close to release that I doubt even a beta will be made available to the public. The best you can do to help is pass the word to friends that play and convince them to buy their own copy.