Hot Take: Old Cosmetics Should Be Available
This might have varying opinions, but I think that at the very least, the prior year's earn able cosmetics should be rerun with the new year's cosmetics.
After grinding out all of the Blood Moon quests, I'm left with a great amount of currency with nothing to spend them on. Then I go over to the Blood Moon collection and previous f2p cosmetics are only available through auric cells. In a way it's BHVR saying, "Too bad you missed out on the last event, shell over money or take the L."
All the while, we are left with inexchangeable currency that just sits there and disappears by the end of the event. The only upside to giving us more currency than we need is for those of us who are strapped for time and can only complete the more bare-minimum quests are able to get the available cosmetics.
Yet all prior cosmetics are just gonna sit there and rot in the store because let's be honest, none of us are going to waste our auric cells on basic outfits when there is much better.
TLDR: We should be able to access, at the very least, prior year f2p event cosmetics as well as the new ones with the f2p currency.