Being a good dps player mostly means doing good dps. If you are in a top 100 guild anyone can use their BoP's or HoS' properly. I also feel that you're greatly devaluating the importance of DPS on progression. One single bop isn't going to drop your Rank By 50 and same with everything else. If you and your raid is alive you are using enough personals. Sure some of the ranks are cheesed but PR rankings are definitely a pretty good measure of understanding and knowing how to play your class.