i wish i had more ideas to offer. i like the theme idea, and the idea of giving each person their own day.
also, talking about news might be interesting, although i don't follow news much some of my favorite videos talk about news related things. also, i like it when vloggers talk about little anecdotes as well or go places, so maybe if one of us (assuming ya'll want me!) are going somewhere interesting, they could film and talk about where they are and what they are doing. like, i'm going to mackinak island this summer FOR THE FIRST TIME EVER AND I AM EXCITED and it might be fun to film my little ~adventure~ also i want to talk about geocaching at one point, because no one seems to know what it is, but i think lots of people would enjoy it!