As of 2014, are there any people at Gainax who worked on Evangelion (the TV series)?
In 2011, many main creators did drop out from Gainax. They are the members of the 'Gurren Lagann' and 'Panty &amp; Stocking' creator.

Panty &amp; Stocking with Garter Belt Wikipedia

After that, those members build a new company named 'TRIGGER Inc.' as the anime studio of course.

Trigger Company 

When they make the anime 'Kill la Kill', answered the question of the 'Gainax drop out'.

ガイナックスを辞めた理由。新作「キルラキル」トリガー大塚雅彦代表に聞く１ - Why they dropped out from Gainax. We asked Otsuka CEO of the Trigger of new anime 'Kill la Kill'.

---Japanese---


  ガイナックスを飛び出し、身軽さを手に入れたかった


---English---


  We want to spring out from Gainax, and take the free from the burden for the new challenges.


In fact, they have continued the new challenge. 

Little Witch Academia 2 Crowfunding 

You can interpret this as the fall of Gainax. But I do not think so. There is no doubt that Gainax has grown them. When the grown birds leave the nest, their parents should be relieved. However, I think I might be the minority, but I think that they ought to be praised.

Today, Gainax is too large. I think that their current essential work now, grow the people, and make the affiliates. Studio Color, A-1, Trigger, those are the works of the Gainax I think.