Is there a way for font designers to provide flexible support for arbitrary accented combinations?
A. Yes, in some cases, modern fonts support diacritical anchors, which enable pretty good dynamic display even of completely arbitrary base+accent combinations. For example, in Windows Vista, the core fonts (Arial, Tahoma, Times New Roman, and a few others) already have this feature. Other systems, such as Mac OS X, can provide such dynamic display even in the absence of explicit font support.