It would be nice to have a setting where you could choose with Season's currency you'd like to loot. (And it would actually work.)

I've only seen a couple of dyes and maybe some decos added.

It would be nice to be able to get some items from past (Galactic) Seasons. As these are really just cosmetic items, I don't see the reason as to why not. It would give us more ways to spend our Season's Tokens. I had to buy some unwanted items in the last Season, just so I wouldn't be capped and miss the Tokens I got during it. Or the Token limit from 15 could be upped to 20, giving us more Tokens, while there would be more items to spend them on. Of course, the pricing shouldn't be too high either. Maybe weapons, mounts and armor sets from the Free To Play track could be 1-2-3 Tokens, while those of the Subscriber track double that.