Is there anything that can be done to modernize Emacs? 

I found this list at the emacswiki: 

    FFI (foreign function interface). Would be great to have this in GNU.
    Enhanced Numerics. We sorely need this too.
    Apparently much better multimedia support (Of particular interest to me.)
    Doubly-linked lists, skip lists, and some other possibly interesting data structures.

Does Emacs have a feature request location, or even somewhere to post issues?