Re: Gender imbalance
One of the results is already happening; whether it is worrying or not is for you to decide.
In the past when more men than women went to university, a lot of male graduates married women non-graduates. But nowadays in a lot of Western countries we have more women graduates than men, yet women graduates expect to marry male graduates (and indeed all the women graduates in my family have done precisely this; anecdotal but understandable since it is easy to perceive - not necessarily correctly - that non-graduate men are likely to have more backward ideas about the role of women.)
The result could be a future with a reversion to a world in which a lot of women are competing for "suitable" men. Perhaps nice for the men, but the potential social effects are unpredictable and perhaps negative.