I get your point but I think it's just better for people to communicate more in party chat. In today's game it seems that if you talk during a party people get frustrated with you but it's part of being in a party. This is a community and if you talk in party and set up skillchains with others and set up the right macro, there shouldn't be that overlap your talking about. But the way the devs have taken this game in a direction of solitude I don't think they will implement this. They just don't care