The new AMS with integrated dryer is what I have on my radar. An big Idex unit would be cool, but not something I would use all that often, but an upgraded AMS with a dryer and integrated bypass would be really handy on my X1C.
https://www.reddit.com/media?url=https://i.redd.it/kzd8xeic4gqe1.jpeg
https://www.reddit.com/media?url=https://i.redd.it/kzd8xeic4gqe1.jpeg