I walk into this knowing that there's more than one old WPHL team that was an exception to the rule I've found over time... but look what happened to the WPHL.
Ag buildings generally don't want ice plants. Even if that Ag building is talking about other spectator sports (my first experience with this was Yakima, WA, BTW)... generally, you'll see no ice plant.
If they're showing a hockey configuration in their ready-to-build design concepts, they're thinking about it. Despite the numbers of people on hfboards talking about how Sacramento could handle the sport when Golden 1 Center was being built, they never looked at everything the planners were showing to us. No rink was conceived. No hockey is considered... and that should have been evident when California State-Sacramento started talking about a new arena with hockey capability a couple years ago (which, BTW, that idea floated into the ether and has yet to resurface).
Now, if you find something in regards to Fort Worth, cool. If you got nothing, then nothing is probably the way to bet. And ask yourself why we seem to be encountering a number of arenas that don't give it a thought.