I want off the software equivalent of the fast food menu - crap designed to bring in the most revenue for the least expense, user health and preferences be damned.
I've already started replacing a lot of the "as a service" software I used with self-hosted equivalents.
The next one I really want to hit is "family chat" since Apple is still making a mess of it for folks with families split between iOS and Android. I'd been looking at the self-hosted options, and none of them really hit the spot - I might just bite the bullet and make my own.