Mac OS X UI support

I'd like to know whether the XEmacs developer community has seen any interest/action toward native graphics support for Mac OS X. By this I mean substituting Quartz and Aqua for X11. If such an effort is already underway, I'd like to lend my support if I can. If not, perhaps a developer who is already familiar with the pertinent portions of the code base could give a brief overview of how feasible such a port would be, and what steps might need to be taken to make it a reality. If this is just silly, I won't take offense to a good whack with a clue-by-four; this is a fairly naive question. My (cursory) examination of the code suggests there are X11-isms sprinkled liberally through the code, which might make this type of transformation inadvisable. On the other hand, I thought it was logical to want my beloved text editor to be a first-class citizen of my preferred OS. Regards, Tom