Maybe.And maybe I've already seen too many "woohoo" posts about this from MVPs, when I suspect 99.8% of Excel users will never use these functions. Trying to explain character classes, greediness vs laziness, back references and subgroups to your average office worker is not something I look forward to. It'll be even worse than the time I tried to explain Xpath usage in FILTERXML...
Maybe I've been on forums too long - I think I'm starting to sound like Bob on a particularly grumpy day.