I am pretty into Crown Store and Crown Crate stuff, and while I am not sure exactly when Wild Hunt and such crates are coming back, I am literally certain that they will.

Storm Atronach crates have been re-released at least two times to my recollection, for example. I can't remember off the top of my head, but other ones have been, too. It's usually a temporary thing, so you've got a series of Xanmeers for example and then you also get a brief chance at Storm Atronachs.

They don't get re-released often, but they do come back here and there. It's just a matter of being patient and not spending your Crown Gems saved up from other crates.

My strategy has been to do some Crating when the Storm Atronach gets rereleased; since I already have almost every item in the crate series (except for a few Apex mounts) it lets me get a bunch of Crown Gems for a rainy day. I did that a lot earlier this month when 15-packs of Xanmeer crates were on sale for 4000 instead of the normal 5000.

tl;dr with Crown Crates, it's just a matter of being patient. You'll get what you want to get eventually. Hope this helps.

Or Air-Atronach