I've been thinking about taking Meteorology at university
Go for it. I know nothing about Met except what I needed to pass the exams (and I've forgotten most of that except the bits which are useful for flying around the UK). I'd be surprised if it's any help in passing exams, because we all know that examiners simplify things so that people who really understand the subject just end up getting confused. But I'm certain it would be a benefit in real-life flying. As long as it's a subject you enjoy, it sounds like a good choice to me!
What line of work one could do, which would benefit themselves when it comes to getting a job back in flying
I would suggest anything which pays well enough for you to keep your flying current in your spare time.
FFF
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