Kane and Stafford are very different. Kane was great on the forecheck and PK. His speed and physicality tilted the ice. He was very disappointing in his scoring. Stafford is pretty good in the O zone and converts his scoring chances well. Kane's youth is in his favour especially if he ever figures out how to score and how to complement linemates. Point is it isn't that lopsided. I like Staff and give him the edge at least in the short term.
Similar story with Myers/Bogo. Given Bogo's continuing injury problem Myers is clearly ahead but Bogo is very close if he can just stay healthy.
If Armia becomes a solid 3rd liner we have won. If 1 of Lemieux or Roslovic makes it we have a big win. I'm not in any rush to call it though.
I think the other piece that often gets lost is that Kane was done for the season last year and we were in a very tough playoff fight. Getting a player that could contribute nicely in the middle 6 and a slight upgrade on the backend was big for our playoff push.