I like most of what I read in here.
About Kabuto using other people's abilities,
I found it interesting that Kabuto himself used the powers of Suigetsu to liquify, but called forth others such as maru, kimimaru, etc. out of his stomach. It looked a bit awkward, but I like the fact that he not only has a shield in front of him with those stomach summons, but he can launch a barrage of random moves.
I don't know if there is a particular reason to it, but I could see it being the amount of effort\research Kabuto and Maru did on those 3. (or the amount of DNA\blood they had on those 3). It was quite clear that Kabuto spent years collecting DNA and blood following Maru's advice (find yourself by gathering as much info as you can) and after Maru died.... Kabuto took that advice to a brand new level... instead of finding himself via gathering, he made himself better by what he collected!
I'm just glad Kabuto absorbed more powers than what he verbally told sasuke. I think Kabuto only mentioned absorbing juugo, suigetsu and karin to Sasuke because Sasuke knew all about those 3, and the others would be kind of pointless (not to mention it's nice to keep some stuff hidden)
I think Kabuto will handle whatever Izanami attempts to do.
I also think Suigetsu and Juugo are going to show up and make it a 4 verse Kabuto fight.
No offense to their fight, but it seems like a battle of "trump cards".