Ok, let's say I LOVE "A Bug's Life", and I think it deserves a sequel. So let me give my opinion on what happens.
After the untimely death of the Queen, Atta takes the throne. She likes Flik a lot more now, but before she can make him her king, the despicable Queen Honeycomb threatens to overthrow Ant Island and make her new hive and kingdom there. Flik has no choice but to track down the Circus Bugs, and with a new friend from the circus troupe (Molt the grasshopper), Flik and the crew plan to overthrow Queen Honeycomb, her faithful allies Bizz and Buzz, and her Bee Drones themselves.
The cast will be...
Dave Foley - Flik
Julia Louis-Dreyfus - Queen Atta
Hayden Panettiere - Princess Dot
Jennifer Saunders - Queen Honeycomb
Andrew Stanton - Bizz