Using amber and Rookie's suggestions the longest it could possibly get is 5 letters and that will only happen in two scenarios:lounge in 2021: go rws
lounge in 2022: go bRRrgt7s2
1. We get BC1, BC2, or BC3 from both SNES and GBA. I think this is unlikely since if even we get a BC from both games it will probably be different numbers. This would cause acronyms bBC1s and bBC1a.
2. We get BC from N64 and also from one of GCN, DS, Wii, or 3DS. I think this is likely and so this would mean the only 5 letter acronym would be bBC64.
Every other acronym would be 4 letters or less.