Pop an LCPDS video card in, or pop the right one in at any rate, and you can drive a two page display in thousands of colours and with extended desktop. One advantage of the LC575 in this respect is that it takes a Comm Slot 1 ethernet card, so you won't lose networking if you go this route.

Most of these cards are seemingly not especially good by comparison with high-end Nubus cards, but I think that Focus Enhancements made one that was accelerated. Tracking down drivers might be an even greater pain than finding the card, however, as they are exceedingly rare.