Pheidole hyatti are sure great ants. I posted before, but they seem to go in overdrive mode in captivity. I imagine they one day could be transported to an exotic location and easily turn invasive. They get a bit like it already in ant farms. Mine had 1000s of eggs in only 2-3 months, and they never do that in the wild that I have seen. I wanted to do a test at the old place and take a colony, and see what they do in an urban apartment complex...but, I never got the chance. I had a theory they might have turned invasive, compared to their natural habitat. They did however seem 100% resistant to Argentine ants. The Argentine ants completely ignored the large colony of them. I moved though, so no idea what they did or what came of it.
And, as far as I know, there are no Pheidole hyatti in walking distance from where I live now or I'd have an ant farm of them.
Really easy to care for though, really large for Pheidole and look cool. Definitely were never boring, and were rather easy to stop escaping as they (at least ones I had) were bad at climbing.