It means the GOP is projecting their hopes onto Trump just as much as Trumps voters. They hope he'll just sign whatever bills they put in front of him, and they'll be rewarded in the polls for doing what they campaigned on.
And it won't work. He's already got the lowest approval rating in the history of polling of any incoming president. He's a malignant narcissist that craves adoration and validation, so he'll blame the Democrats initially. The GOP will start to distance themselves from him as midterms approach. It won't work for GOP politicians this time around anymore than any other, especially when they just took away healthcare for twenty million people and they still haven't made America great again (whatever that means) nor will they have given all those poor Trump voters high paying factory jobs that they think Trump was going to get them.
When working with the GOP doesn't deliver the love he craves, he'll turn on them and try something new. He'll do something characteristically dumb like military action he thinks he can get away with to be a uniting wartime president, because he thinks that's what makes presidents popular. He'll probably try to nuke North Korea out of the blue, or start some major intervention in Syria to "stomp out ISIS." or some other macho sounding bullshit that generally does nothing to improve the situation but gets more Americans killed and keeps the middle east pissed at US, especially after moving the embassy to Jerusalem and giving the green light to ethnic cleansing in Israel.
This is if he manages to avoid impeachment for colluding with Russia and dismantling NATO while the rest of former US allies stop cooperating because they don't like feeding intel to Putin. Then the GOP will try to burn him and mitigate their losses by running this years version of Gerald Ford. I don't know if that's Mike Pence, or if Mike Pence is this years Spiro Agnew.
It's going to be a rough ride, and the GOP is fooling themselves if they think they're going to come out of this smelling like roses.