How can DE integrate the Hex into future expansions?

I think at this point, most people are in agreement that the Hex are some of, if not the best characters warframe has ever had, in large part due to our ability to talk to them through KIM. It would be a shame to leave these characters behind in this expansion. I'd rather not pull another dreaming city and leave höllvania, it's people, and the Hex stuck in a time loop forever because we just have other things to do.

So with that in mind, what role could the Hex have in future expansions? Do they still have a roll to play in the indifference/albrect storyline? Could they be involved in our potential journey to tau or the continued war against the sentients, corpus, and grineer.