05-31-2019, 03:22 AM
It seems to be modeled after the old TF2 trading system tbh. I don't know if the limit of 8 is based on a binary system of 2^3 or it's just convenient. TF2 didn't escape this system until Steam trading came out, which introduced a new overlay and cross-game trading. Changing this now might require something of a similar overhaul to that.