The 13+ will drop eventually when they get this right for credit on attendance, and those doing all the cups would have a better chance at the final tickets for actually attending games, I'd imagine season tickets would be the same with the cup final thing, because they have season tickets for the premier league only and buy the rest on top
Eventually they'll have a system where different fixtures have different requirements to buy, a bit like the points system at other clubs - it'll become more accessible for all because there wont be people credit hunting
Will take time, a few years I think - big big changes will come when the new stand is done, but nothing is finalised