You do not know what you're talking about. Blood Elf is the worst horde race (other than Tauren) for every DPS class/spec in PvE. 2 minute CD, it restores 2% mana (6k) and doesn't scale for mana users. It restores 15 energy/runic power. I'm not going to hunt through rogue abilities, but that is not enough RP to cast a single frost strike or death coil. Casting Horn of Winter (20 sec CD) generates 10 RP, by comparison.
If you see a PvE blood elf anything, you can be sure they aren't min/maxing their racial, because it sucks for everything. I cannot believe you're arguing that it's a "great" PvE racial, lol. Get informed.
Hell, for some DPS specs, Worgen actually have the best racials in the game - that 1% crit and sprint are both pretty amazing.