There's a ton of boring and rote maintenance tasks on the English Wikipedia that are too complicated for a bot but are simple enough for regex to mostly be accurate. Stuff like fixing spelling errors, links to article names, etc.
https://en.wikipedia.org/wiki/Wikipedia:AutoWikiBrowser
Right now the tool (AutoWikiBrowser, linked above) is slow, old, Windows-only, and tough to maintain. AI will easily replace this. Heck, I'm already using it to generate the regex rules.