Could the tagging system be enhanced to support tag synonyms?
I've seen the answers to this question about tags: Do 23,000+ tags need tag database editors? but it's not clear if it's possible to somehow have a tag that is permanently made into a synonym for another tag. This is for a project that is renamed now, which means that it's not enough to retag existing questions once -- since people are very likely to use the old name for a while still.
(I'm not sure whether this is a feature request or not, but adding it since the system forces me to choose something, and it's looks like the most appropriate.)