Hey databommando,
That doesn't answer my questions (which was supposed to quote the above post stating that firmware 2.80 was improving the situation by ensuring the final characters are displayed) about why on Firmware 2.83 those fixes don't appear to be present. Also, this is very much a dark ages of technology issue, which most systems solved in the 90s with scrolling names and other solutions. Even the proposed solution from that NAMM press release to include the last several characters instead of some of the characters in the middle would be an improvement.
Naming is a partial workaround at best, as it means I now lose the direct link between the original IRs and my new names. In fact, setting the title metadata to a display name but leaving the file name alone might be a better overall approach assuming the title metadata is still what's displayed if present on the HX Stomp. I'll have to try out these approaches when I get a chance, but it was very disappointing to load the IR pack onto it with HX edit, see everything load up, then get to my first band practice of the night and realize I couldn't differentiate any of the IRs by name.