while Ayra has... nothing

Probably IS's wierd and slow pace at releasing FE4 seasonals really.

Aside from Reinhart & Ishtar, IS has opted that Jugdral's only getting seasonals on banners dedicated to only Jugdral characters. So they're getting content about a year apart at minimum. But on top of that, IS seems to want to release said seasonals the same way they do New Heroes (ie: Here's exclusively Gen 1, next time here's exclusively Gen 2, etc)

So after our Jugdral dancer banner in 2020, both Ayra and any Gen 1 character not included on that banner were gonna be waiting until 2022 at the earliest to get a seasonal alt. Assuming IS kept at the pace they've been going at.

Now as for why IS seems to be allergic to putting Jugdral alts on a mixed banner is another oddity and a question all to itself. They've only ever done it on two banners, _that's it. The aforementioned Dancer Reinhardt & Ishtar and P!Brigid.