Let me preface what I am about to say with the fact that I am a veteran.
I highly doubt that a Trump administration could conduct an effective and well-thought out reform to the VA disability system, but it badly needs it.
The ridiculous range of "conditions" that qualify for disability benefits is embarrassing. For example, if you use a CPAP for sleep apnea, that's an automatic 50% VA disability rating. The standard for something qualifying as "service-connected" is a joke. If you stumble off the sidewalk one night while drunk on liberty and sprain your ankle, that's "service-connected."
The percentage of people who spend their last six months of active duty going to multiple doctor appointments so that every possible condition is documented is straight up fraud, waste, and abuse. A huge percentage of these conditions are a result of age and poor health choices, not the rigors of military service.
It is a system that is easily gamed and costs the taxpayers A LOT of money. That sucks, because there are plenty of disabled veterans who need the support. The average military retiree has a disability rating of 56%. This just sucks resources away from those who really need them and it makes the system more difficult to navigate for those with legitimate disabilities.
95% of the people who do this justify it by telling themselves "hey, it's not me, it's the system."
It needs reform, but Trump's political appointees aren't the ones to get it done. A lot of folks deserve to have their face eaten on this one because they gamed the system as much as possible, and others are going to have their faces eaten because any "reforms" will be ham-fisted and poorly considered before being rushed into implementation.