Hey guys, nice thread! 
Some random comments from my side:
I try not to play sac outlets like Sakura-Tribe Elder
unless they're really worth it. basically you trade 1 permanent for another, while WW wants you to have as many as possible.
What works for me is Arbor Elf
, Llanowar Elves
, Farhaven Elves
, Wood Elves
, Priest of Titania
and Heritage Druid
in combination with Keeper of Progenitus
(I play kind of an Elf subtheme, so the WW comes more like a surprise.)
For upping my permanent count I have Khalni Garden
, Wirewood Hivemaster
, Siege-Gang Commander
and Wort, the Raidmother
. If you are more combo, you can substitute Siege-Gang for Deranged Hermit
Finally, what really rocks is a copy of Primal Forcemage
or Beastmaster Ascension
to pump all these small critters to become a real threat (in addition to the Bogardan Hellkite
s and Rampaging Baloths
)
If you prefer the "griefer" playstyle, you could check out the insanely unfair Sundering Titan
or Malfegor
, who takes away your opponents creatures immediately after they get them
Anyways, keep posting your latest crazyness with WW, it's a fun card