Agree there needs to be a solution, however the club's sustainability strategy was a bit of a token effort and gives no confidence that it will be done, and only concentrated on travel to the City Centre. If your last train or bus home is 10.30pm there is nothing the club can/will do to help.
Looking at the 2040 transport strategy, it is planning for 50k new residents in the City Centre by that date, which includes the area around the stadium and up to the Central Park tram stop north of Oldham Road, and there a centripetal focus due to that. There are vague Tram/Rail proposals for more integrated system but based around Piccadilly station. You can spend billions on a new rail line and it will help less than 10% of the fans. The immediate solution to the imminent parking restrictions is orbital park and ride locations 4/5 miles away in different locations, but that will only mitigate the problem slightly and could be seen as shifting congestion elsewhere if big enough to have an impact, and would need 54 double-decker bus trips for just 10% of the crowd as it stands.
The problems will be upon us far quicker than any package of measures could be rolled out and it will end up in meltdown. A lot of the planning seems to assume it is people with unlimited time going to the match on their own from areas already well served with public transport, not young and old people travelling 4 to a car from areas without great links.