While most roms work from the original variant, None of them support the radio correctly. As an example, using any kernel on stock TW will kill the radio, and users have to search and wade through the SPH-L720 forums to find info/files for our device.
A sub forum with the requirement of supporting the Tri-band version would be helpful to the Sprint S4 community, as it would stop much of the confusion of using the same forum, when it is not the same device. I also believe it would help gather more attention for what is now the standard sprint S4.
P.S. I have posted this in the appropriate thread, I just want to see how much of you want the same thing.