With the fomo models I just don’t bother with much games that have stuff like that in the first place really. Really hard to get into old games with a bunch of the cosmetics locked out to new players which isn’t fun.
The option to pay less is enough motivation for people to want to buy the current battle passes. And price increases on old battle passes could mean they are still available in the shop and furhter incentive to keep playing once you finish a battle pass. Like I said. RL gets in the way of finishing battlepasses. So it would just be better overall for players to have them all available. Rather then just focus on the one from the current season. And the good will toward players is better business practice for players IMO. Then just fomo gaming. People should want to play because they feel like it. Not because they feel like being obligated to finish a fomo battle pass. And being able to progress old battle passes makes the replayability of this game go way up and have some decent progression to keep playing if you feel like it.