Feel free to send me a patch and I’ll apply it to CVS.
As for egldisplay - eh, it’s really made for X11. What we should really do is remove the X11-specific stuff, and make the classes inherit from classes in x11display or from windisplay based on ifdefs - as opposed to directly inheriting from classes in display.
(egldisplay is basically a fork of glxdisplay, but later we’ve moved the X11-specific stuff from glxdisplay to x11display).