I would be very very very very happy if there was a way to have a TextMate textview totally replace the Xcode editor.  I'm sure others have asked for this, but searching through the list was painful on my slow-ass internet connection, so I make the request here.  

The idea is that you could write a SIMBL wrapper or an Xcode plugin wrapper (the API, though private, has been documented) around a subclass of the Xcode TextView (a dump of the framework - used to be called PBX.framework or some such would garner the class)  and then basically do a poseAs.

I, for one, would certainly be willing to pay for this feature.  That is, I already own TM, and I would happily buy another license for this product for $40.  What are the odds, difficulties, etc of this?

vinayvenkatesh