When I played Standard in the mid-2000s, I found white tappers,
Otherworldly Journey and
Shining Shoal to give WW throughput. I have also played a lot of Classic and Vintage hatebears. In those formats, the creatures often were outclassed and couldn't attack, even if they did throw a wrench or 3 into the opponent's plans. Luckily, at the time, Young Pyro wasn't around, and most decks with creatures were artifact-based (and very vulnerable to hatebears).
Leonin Arbiter was an all star in Classic (and seems okay with 20 some fetches).
Lastly, though, the best way to ramp up the performance of WW is reducing the efficacy of defensive measures in the environment. Two-drop 2/xs and Savannah Lions paired with equip/anthems are going to trumped easily in combat and by post-Mythic creatures, not to mention the old class of spells that kept WW down in the past. Something like Snap and a removal spell should beat WW by itself in a fair share of games.
Edit: in MTGO cubes, I often enjoyed lower-curve white creatures with the ability to manipulate board presence to support midrange decks. Think 8.5 tails.
