The devs chose role abilities over lore abilities mostly because they wanted to balance the game for the older jobs but ended up making the balance worse than a new RDM rotation that doesn't actually utilize it's mechanics properly... I have seen videos and played a little bit of RDM but it did not strike my fancy, same with SAM... I honestly believe that the lore AND role abilities are what make the job and they fail to realize that much like Blizzard's World of Warcraft team...