Good ideas. I like the one about combining forge and firefight together. They really need to bring a UNSC aircraft for the next Halo. I think the Falcon is really fun to pilot but it looks behind in technology. In the year 2557 I think they would have some better aircrafts. It was, in my opinion, one of the best vehicles though. I also loved the Hornet. I hope they manage to some how innclude the Pelican again. I loved Mission 6 (I think it was called Shutdown) in Halo 4 because of it.
By the way this isn't 343's website, it is a fan made community. Go to Halo Waypoint if you want a response from 343.