Well his 2020 campaign slogan is Keep America Great, so, if by some “miracle” (a horrible one at that) he can make it to the campaign, probably then
The issue with a "Keep America Great" slogan is that it rejects the right-populist edge that characterizes his entire political base. America as is can never meet the far-right's interpretation of "Great", barring an effective coup or criminalization of dissent. It would be a disastrous move on the part of Trump and his core appeal to use anything other than this continual outsider persona and fascistic sloganeering.