Yes, but please not just yet. I am still evaluating better ways of generating the VGA signal, which may be more steady and use less CPU. This might mean changing the pins the signal is output on. However I am not likely to change the format of the framebuffer (240x320 array) so any nice demo code people make now should still work and would be easy to use as example code in a library if authors wanted.
There's also some design decisions to make - if it turns out 640x480 works, should it be a separate library or the same one? Being the same library could make code larger and slower, but might allow mode changes at runtime. Also a library would need standard graphics functions (lines, text, bitmaps) - this is different in an 8bpp mode to a 1bpp mode. And whether to support composite output - 320x200 or 240 8-bit greyscale would be possible. I think that a single library would be more easily maintainable.