Would it solve the problem if, in addition to sets of gear, there were sets of Armoring mods? Something like _______ Armoring ALPHA, BETA, GAMMA, DELTA, EPSILON. If a set of the mods were attached to various items on the same character, it could provide benefits similar to having a set of gear. However, there would be no added bonus if the mods were of the same type. For example, a player has 5 pieces of orange gear that all contain the ALPHA Armoring mod. They're improved pieces, but there's no set bonus. If they had 2 or 4 unique Armoring mods, or the whole set, on the same character, then there would be a bonus.