I think my favourite thing about the second outfits are the fact that they are all wearing pants
I can't even remember the last time that happened and it looks good.
I think Ai no Gundan is going to have a TON of dance covers. I was trying to learn the dance for work-out purposes (lawls) and it is easy to pick up (except for maybe the dance break) but A LOT of fun to do (at least for me) It's a bit like One Two Three in that way.