I'm... cautiously optimistic. I see the value here, however there's also a potential for this to cause problems when people do a poor job of evaluating whether or not the title they chose matches what they're asking for.
Take example 2; The suggested titles are certainly better than "doesn't work", if we assume the titles actually describe their problem... but I'm not so sure that they do because the user hasn't really presented enough in the question to support anything more than "doesn't work". If you don't know why it doesn't work, you can't assume it's because they added classes to elements, or whatever it is they actually did since that doesn't seem to be part of the screenshot.
A very large percentage of the questions we get on a daily basis are like example 2.
Converting useless titles into useless titles with proper English isn't ideal... but at least it'd be a tool to help improve the questions that aren't this hopeless? I'd certainly appreciate having something like this for editing a question title once the question is improved.
Put another way, I fear that this may put us in a situation where question titles can be inaccurate because we're asking users who do not understand the problem they are asking about to choose a "recommended" title from a list of AI recommendations... potentially adding incorrect context/information to their question. It's one thing for a title to be... lacking information, it's another entirely for wrong information to be added to it.
