That's not going to happen. The GOP's 2016 platform is its most anti-LGBT platform ever, and it's going to gain traction because a GOP president isn't going to do anything to block the GOP's legislative agenda. Even if Trump doesn't personally do anything to advance the GOP's anti-LGBT agenda, the fact that he won't even try to stop it will cause untold damage to our rights. He's not going to veto his own party's bills.
Also, remember that some of the most important advances to LGBT rights in the last few years have been the result of Obama using Title IX and the EEOC to fight discrimination. Trump isn't going to continue that.