On the subject of tags, it would be really neat to get
rid of the tags
you suggest and
actually some which are useful such as <ipa>kuːl n(j)uː aɪ piː eɪ</ipa>
Yep, that's what my extension does (including converting from X-SAMPA to
Unicode IPA).
Is your extension installed on any of the active wikis? Where can I try it?