"R" is literally never going to occur (4,000 options). You'd need 10,000+ people playing at the same time for them to be realised, more actually, and that's never happened in the history of MWO.
Limiting people to 2man groups, minimum, will cause more harm than good. Limiting them, just for MERC only - is simple a choice. I get why it is being done, to create a sense of MERC unit / group mentality, just that it will not work with the current state of - everything. Nothing to do with math/MM.
Edited by justcallme A S H, 17 January 2019 - 01:55 PM.