Okay, let me have some fun with this one ... but there's a genuine question buried in here, I promise.
What's the use case here? I'm honestly curious what the requirement is. I'm trying to understand the workflow of everyone clamoring to see all 43 sites of a massive trunked system in one giant table, all at once, on a cell phone. A CELL PHONE. The little glass rectangle in your pocket.
So walk me through it:
1. Are you scrolling a 43-site table one-handed on a 6-inch screen and thinking "ah yes, THIS is the browsing experience I've been missing"?
2. Are you standing in line at Taco Bell and the only thing keeping you sane is thumbing past all 43 sites and all their departments in a single unbroken wall of text?
3. Are you showing a friend "hey check out this trunked system," and the whole demo falls apart unless every site and department renders at once so you can dramatically flick-scroll through it?
4. Are you conducting some kind of speed-reading competition where the winner is whoever can pinch-zoom across all 43 sites fastest before the timer runs out?
All kidding aside, I really do want to know. Clicking into a site or department is one tap. So what is it about the old flat list that made your workflow better? Tell me the actual thing you're trying to do and I'll take it seriously. I'm not looking to say no, I just need something more than "it's different now waaaaaahhh."