The 6th men

It doesn't necessarily mean that they're a sub right?

It could mean hamburger

ya but they should be registered as substitute

wait if sixth men is not a sub then what are they? even if you're trying to do what vision strikers did with sixth men being an integral part of the team sixth men technically still counts as a 'sub'. because y'know, the game is 5v5

some of them could be dominant

They could play certain agents on certain maps

If teams play like Team Secret, then yeah

Some teams would rotate the roster based on maps. Some would keep a constant 5 and add in the 6th man if one of the starting 5 is underperforming or not feeling it