(360 version)
When a challenge is complete (win or lose), please give us the ability to immediately restart the challenge - waiting 45 seconds seems arbitrary. Give all humans in the room the ability to “ready up” to force the challenge to restart.
Also - the ability to roll to the next challenge would be nice - especially when you complete a challenge. As it stands - the only way to change challenges is to dump back to the main menu - which in turn requires us to re-invite everyone.
And - I’ve only played the first Security campaign level - but was I missing something - or are there no forward spawn points (there were in QW:ET, right?) Very frustrating to spend upwards of 30+ seconds just “getting back” to the battle - even moreso when you’re then downed in 3 seconds upon arrival! (yeah, yeah - I just need to be better…I admit that!) But I can enjoy the game even when losing - but when a good part of the match is just spent traveling - well, that just isn’t fun. 
Also - the constant texture/LOD visuals on 360 are pretty apparent - dunno about PC or PS3 - but it’s a bit disappointing. Was hoping for a little better.
Otherwise, enjoying the game other than these issues so far.