What do you want to be able to customize?
mooism2: I don't particularly want to customise.I would like wide comments (e.g. containing <pre> text) to not force the whole page to be that wide.I would like to be able to hide sub-threads if I do not find them interesting.  (Whether this should be considered as voting down each individual comment I don't know.)Actually, I wouldn't mind being able to choose between writing comments in markdown/textile/etc.