Not sure this is a sincere question, but Trump administration "policies" that generally play very well broadly with Republicans:
- Border security
- conservative judges
- support of Israel (recognizing Jerusalem as the capital)
- tax cuts
- reduce regulation
Plus a couple that were very key to Trump's support, but is not always been held up and down the party:
- Not getting involved in military actions overseas
- protect/restore American manufacturing (remember that one? Don't hear much about it any more)
Now...are those "Trump policies"? Not really, with the exception of the last two, those are pretty mainstream Republican policies. I would assert that he probably doesn't even give a shit about anything but maybe immigration. But people saying they support his policies are (or can be - who knows) easily talking about any or all of those.
But there are probably some things to be learned from Republicans about the power of those last two, non-interventionism and protectionism. Those two resonate strongly with the people who largely became Trump's base, non-educated whites. You don't have to mimic Trump's position on those, but it would be a huge mistake to sweep those aside and ignore the sentiment that made those so powerful. Trump may be spoiled goods, but those aren't going to lose their potency, and Republicans would be wise to be mindful of those voter concerns rather than simply think they can "take back" the party to the Bushes. Or they will consistently be under threat of a populist shit-stirrer.