Aguero really needs to step up his all round pressing and energy. Jesus presses but is also looking to get in behind and burst into the box, Aguero presses but is then nowhere near the action in the box. It's about developing that side of his game.
Personally, unless it clicks soon, I'd use De Bruyne or Nolito as a false 9. Both will chase the ball, both are good in and around the box and both will interchange well with Sterling/Sane. It would allow another midfielder to come in, Fernandinho in there with Silva perhaps. Or Sterling could go into a no.9 role with Navas/Nolito out wide.
I think there'd be more fluidity.