Currently, the super key is equivalent to alt for me on Ubuntu. I'm guessing that this is true because Mac does not have a super key? Thus, it would not make sense to have bindings that cannot be used by Macs.
However, I think that it would still be nice to be able to use it for my local binds. It's especially nice since I know that it won't conflict with any other binds. Would this be difficult to implement? Am I missing other reasons for not doing this? Scott
