A game has to change in order to be flexible with it's 'gamers'. For your complaint about the 'Guy' revealing power weapon locations and meta game info, just change what match you specifically want (Trash Talk, Quiet, etc.), which probably wasn't in the beta, but however it's just a beta so it's definitely subject to change. For matches that seem too easy, play gametypes that don't use custom loadouts, otherwise just deal with the 'annoying little punks'. In regard to assassinations, to do an assassination is to hold B, but if it isn't then it should be in the final copy because it was in Reach and Halo 4. Remember, man, this is the 2nd beta of the game. Both are just sample tests of the full game. So far, the best we, as fans, can do at this point is to wait and see. I promise 343 is really trying to serve the game in a way everyone can enjoy, have fun, and even compete healthfully. I know I may not have answered all your points, but please remain calm, if you weren't already. Also note this is a community forum with "little to no affiliation" whatsoever with the game production company. If you would like, in case you haven't already, at least try to communicate with 343 directly, go to https://www.halowaypoint.com/en-us
Thanks and please understand we care for the game as much as you do.