You are under the delusion that if Trump plays nice, then it is possible that the liberals will do the same and he can reduce his policy headwinds. All the historical evidence says that is a fantasy. We have the house, senate, and WH. His only chance to advance his agenda is to get some freaking legislation moving, which appears to be out of his control. I'd say that the enemies who might be swayed by your strategy are the RINOs in congress.
RINO'S are the immediate opposition....very true..
To advance his and the conservatives parties "long-term" agenda...like KEEPING the House & Senate, he will have to sway other moderates and Independents as well..