Future is with 3 at the back. At least players will be in their preferred positions and I believe it gives us better balance.
Once JT & Zouma are back:
Eduardo/Begovic
Zouma JT Luiz
Azpi Cesc Kante Alonso
Moses/Willian Costa Hazard

Courtois needs to be dropped because he thinks he's untouchable now that Cech has gone. He's been shocking ever since. His reluctancy to come out of his goal line and take charge plus his overall performances.

Courtois has been sent off a fair few times after coming out I think that's why he's reluctant. He could've came out after Cahills pass.

But it's just not the keeper, like we repeatedly kept on shooting ourselves on the foot.

Conte doesn't have the players to play from back. Our defence apart from Luiz doesn't think about forward passing. If some one press only thing they know is pass the ball backwards.

https://footballanalysisweb.wordpress.com/2016/09/17/chelseas-4-1-4-1-conundrum-the-winger-problem/