Is multiquote still broken in XDA? Not working for me and I'm lazy so I'm not going to bother.
CM 6 is Dead, as far as development is concerned. That means any issues and you're SOL. Any security vulnerabilities? SOL. Any incompatible apps? SOL.
There have been a lot of changes between Froyo and Gingerbread. Just because you can't name them doesn't mean they are there. Look at the commits between on an AOSP branch.
There are still a few things I miss from CM6 (Camera App FTW!), but really CM7 is incredibly stable for me. I have been running it as a daily driver since February and, while it was bumpy at first, it's been great since the final release. As for pointer support, is it still really not in? I know there was a proposed patch on Gerrit a while ago.
I understand if there are features you like in CM6, but to call CM7 buggy and pointless is pretty off base.
And as far as colors go, CM7 theme manager is pretty nice. You have a lot of options. Right now I'm using Cyanobread, but I change between that and Sculpted 2.0.