Well, for me it's not so much about readability but about verbosity. There's always so much boilerplate that I don't know where to look.

I wish there were some default TOS templates that everyone used, and their modifications were all in a different color or something. Or maybe if everyone used common building blocks of text that were modular. Kind of like how Creative Commons lets you build a license using different key parts (attribution, non-commercial, etc).