I think the ticket system is a step in the right direction. Assuming each Feast season is around 3-4 months, and assuming past rewards were available, let's say (totally hypothetical example)

You get 10 tickets for diamond
8 tickets for platinum
6 tickets for gold
4 tickets for silver
2 tickets for bronze

A Hellhound mount costs 10 tickets. That would mean, if I ranked Gold in season 5 and Platinum in Season 6, I'd have ranked enough to afford it after half a year. Fair enough?

SE has said a lot of things were exclusive that ultimately ended up not being that way. Moogle outfit and hat, the Lightning stuff, etc. Probably the Yo-Kai stuff will eventually go into the Mog Station too. Exclusivity doesn't mean for life - it stops being exclusive when they say it does.

I'm a business owner so I'm looking at this from a business perspective too. More people playing PVP and earning tickets = longer subscriptions = more money.