Could the Librem 5 ever support "WiFi calling"? (UMA/GAN)

Since I have no cell signal from ANY carrier for about a mile radius right around my house I HAVE to have wifi calling ability. I have an AT&T femtocell now that works well when it’s up but it crashes fairly often anymore. So I’d really like to purchase a Librem 5 but won’t be able to unless it supports wifi calling.

As my current phone is dead I have to buy a new phone now. Do I buy a cheap one while I wait for a wifi calling enabled Librem 5 or do I buy a nice one since wifi calling won’t be supported on the Librem 5???

ANY help answering this question would be GREATLY appreicated!

Greg