Can't imagine such a concept would go over very well with season ticket holders in any sport...does soccer have season ticket holders? If their team becomes a minor league team, do they get a discount? What about for the teams entering the "Bigs"? Just don't see the plausibility of it.
Yes there are season ticket holders. At some clubs people have them handed down through generations after death because the wait lists are truly numbering into the tens of thousands.
I had a season ticket at my local club for twenty years before I moved to Toronto. I miss those Saturday's following my team up and down the country more than anything.
Prices vary according to supply and demand and typically yes, if a club gets relegated they either freeze ticket prices or have to drop them in order to attract the same volume of people.
A major difference is tv viewing. Whilst most premier league games are accessible on tv here in North America most games played on a Saturday in England are NOT live on tv. They have one game on a Saturday at 5pm live on Sky, a couple on Sunday and maybe one on a Monday night.
None of the 3pm Saturday games are in tv. If you want to watch it you go to a game.
None of the lower league games are live on tv, except for the odd game and playoffs.
It's apples and oranges to compare the two sports but you will never experience an atmosphere like a real "football" game. The noise can be off the charts. Seattles 12th man has nothing on a Rangers/Celtic sound or any local derby for that matter.