1) Don't listen to the people complaining about the microphone being in the shot. You are not doing a drama, you are talking. Any talk show shown on TV (ESPN Morning show, for instance) always has the mic's right next to the person's mouth. This avoids a lot of background noise.
2) Challenge modes, if they play as the devs are gushing about, seem like they will be a lot of fun. I just hope I can find a group of people that won't complain and quit after the first try