Nia (the annoying announcer lady) gets new skills or something you can unlock. Serebii wasn't clear on what these do.
I'll let him know: the changes give a boost to the Synergy Gauge or Support Gauge at the start of a round. The main one I use maxes both support Pokemon for rounds 2 and 3.
You better commit a lot of time on this game before giving the final verdict. Not be the kind of reviewer that only plays it for an hour and judge it because I just watched Shofu's review on this game who committed more than a week on this game so far. I'm gonna watch GameXplain's review next.
I've beaten the story mode (took about 10 hours) and I'll put similar time into the online once the servers are live before rendering a score.