Carry-on template resource?
 

After having been very frustrated by flying back from FLL on UA and finding my rolling garment bag, which fits UA's templates, not fit the square templates installed by whomever "owns" the UA terminal at FLL, I decided there needs to be a website for people like us to learn in advance what templates, if any, are installed at a given airport/terminal, and if there are any workarounds (like walking to Terminal A at DEN).

So, does anyone know of a site with this sort of information? If not, I'll be happy to build one, but I'll need help with the data. Would the community here be likely to provide me with details of airports and terminals you are familiar with, at least enough to get a useful start?

Bill