I had most of those Maiden covers on tape back in the day. Oh, to have them now...
Anyway, I was a little let down by the Chickenfoot album on first listen. I love Satch and Hagar was my favorite VH vocalist plus his solo and Montrose stuff. I did listen to it again the other day when I was out in the sun grilling and liked it much better. I think in time it could grow on me a lot more.
I'm not sure if all of these songs were recorded from scratch when they got together or if this is a compilation of a pile of ideas from guys who were excited to be working together. In any case, I expect the next one to be more varied and really shine with each members individual talents.