This question has unsurprisingly come up in a few different guises.
Apologies since I guess old hat but just wondering if it was ever resolved? I couldn't find anything other than the excellent and very interesting linked questions below, where users themselves have done a great job at exposing structure!
So, could the tags be organised in some way so that it's not just presented 'flat'. In my window I have 54 pages of tags, so despite the ability to order alphabetically not ideal if one would like to browse what may be of interest. Obviously the mechanism of organisation, if fixed, could be regarded as too limiting, and if fluid, based on methods such as the attached questions, would probably no doubt have some teething troubles. My personal preference would be for something fluid if the algorithm could be got right, however probably too much to ask.
Am not proposing that anything change at the point of asking questions, (although certainly to suggest 'supertags' could work at point of asking) however purely and simply to make browsing the tags that are out there a bit easier. Aware that the 'Related Tags' panel does offer a drilldown of sorts once you've picked a generic enough search tag, but just wondering if anything can be done at the list stage?
Again if resolved / old hat / everyone's moved on apologies and will delete the question forthwith.