I would not dump Kepler. The team is what they built plus pen help at the deadline. Hope it is enough, but suspect it will not.
The significant revamp of the roster needs to happen in the offseason like it should have last offseason.
You've got to move Casty or Turner or both, make the salary retention work, free up payroll and land a better starting RF and either 3B, 2B or SS depending on Bohm, Stott and Miller performance.
The CF and LF crapshoot experiments need to end - decide on Rojas, Crawford, Marsh, Kemp, Wilson, Kepler et al. Whoever does.not make the cut needs to be sent down or moved for whatever value possible. We need to have a MLB level OF that can play defense, but carry it's weight offensively.
They must have an offense that can score runs consistently and adjust their approach to any pitcher within games.
We cannot afford to have one trick ponies anymore; we must have hitters who can hit for power and get on base, but also produce well situationally and do what is needed to get the run in. If that is a bunt, so be it. If it is stealing a base, so be it. If it is taking a walk, so be it. If it is hitting the ball on the left side to advance a runner or hit a sac fly to get a run in, so be it.