Just make them play their strengths. What made them strong was when their core concepts were based on what Zews taught them and what extra flavor AdreN gave them.
Have them both as coaches. I think AdreN should be in-game coach and Zews pre-match coach. Then they can share who is going to be post-match coach
I'm just going by what I've seen on the server.
They seem to have more "correct fixes" on the server under AdreN than they had under Zews. Remember the choke period they had under Zews?
But they dropped off the more they forgot about Zews work so he is needed.
And if you check the MIBR game: it took nearly a half for Liquid to wake up but after that they were bulldozing MIBR. That shows they need better pre-match work