Look, there are gold buyers in every game. Using that as an excuse to limit PAYING customers to such little trading is insane. IMC treating the rest of the rule abiding population like gold buyers is not fair. You think that having these trade restrictions makes TOS special and unique? Not having normal interactions in a social MMORPG (which this game advertises as) is primitive and not beneficial to anyone.
EDIT: Since you added onto your post, class synergy? Try playing a support character. I play with friends and our support gets little to no loot because of the party/mob loot mechanics. Class synergy would be everyone contributes something and gets a little something in return of the game. It’s lame to be on edge on what we are allowed to give him since, as DPS, we take the majority of the loot. Those are some of the people that this lame trading system is hurting.