Gooey
The old idea of having pure strikers is what has changed. Every fighter nowadays carries Fox3s so they do not want to be hanging around at LL. They will be part of the OCA, then swing to drop their bombs and go back to being OCA again.
There is still a requirement to have the pure flying skill to operate safely in a LL environment (just ask the RCAF what happens when you pretend you are competent at LL flying) but the idea of pure low level fighter strike missions is now a thing of the past. Remember as well with modern SAMs the idea of getting in under the radar is just not feasible any more. Yes I know we should never say never but when you can’t do everything you prioritise the things that you are most likely to do.
As for Hercs etc at low level, you’re going to have to think very carefully before you put them into a contested environment especially when there are modern SAMs about.
BV