ZergFurs is having a contest for their logo for 2016, this is my submission

It meets all the requirements. it has a 4:3 aspect ratio. the text is easy to read thanks to the pretty stylish purple outlines that make the shapes more clear. It was hard to pick what Zerg to use for what letters, but eventually I came up with:
Z: Queen
e: curled up Baneling
r: Spine Crawler, to go with the other r
g: Overlord

F: Zergling standing up being all cute
u: Hydralisk
r: Spore Crawler, to go with the other r
s: Mutalisk bending in a way they might not