He didn’t say he would. He said he would consider it.
Now, let’s hope it’s, “I considered it and decided, NO!”
I think practicality will force that.
Anything that PPACA did that Trump wants in Trumpcare will be rewritten in Trumpcare, which will have a far more orderly structure (like a business plan tends to).
And then there will be a section of Trumpcare that performs bridging, if deemed appropriate, between PPACA and Trumpcare.
This is like replacing OS/360 with Linux.