FG is a real season ticket. You sit in the same seat every game you attend. The difference is that you deliberately decide to attend a game, and buy a ticket for it. If you don't, the club can resell the ticket, which minimises no-shows.
The club utterly fucked up by imposing a £150 premium and that has tainted the view of FG. With the changes, if you use it enough, it will cost exactly the same as an equivalent ST.
It's really quite fair and reasonable that if you have FG and only use it for a handful of games, your per-game price more closely matches individual match-day prices. And the more you use it, your per-game price more closely matches, then equals, the equivalent ST price.
FG now is an attractive alternative that sits between a full ST and buying tickets on a match-by-match basis. That's a fact.