I propose that "we" start calling it what it is: Removing the TX inhibitor. or, if that doesn't suit, making your HF rig into a General Coverage Transceiver. There are very few, if any, "MARS/CAP" mods that simply unlock the MARS or CAP frequencies.
With almost any modern rig, you are simply disabling the circuitry that activates the TX INHIBIT function of the CPU.
I had a Facebook Marketplace ad for my FTM-100DR tagged as illegal. I had it listed as MARS/Capped. I'm thinking that's what problem was. Some old man sent me a message earlier. He didn't inquire about the radio. He just introduced himself and told me his MARS callsign and his regular call.
I told him if was interested in the radio to come look.
Sounds like he reported my post. I just relisted it omitting the mod.