If they are then going to try to hook Trump up for letters from Kim Jong Un or some such ridiculousness, that will just confirm to everyone what a political hatchet job this is, particularly in light of how Hillary Clinton was treated with her private server.
He didn’t even remove the items — they were sent to him by the GSA. He likely didn’t even know what was there and was cooperating to give them anything they wanted. So it’s going to be hard to impute any kind of actions to him regarding removal.
But the aim ultimately here might be to get an indictment and hang him up, even knowing they would likely lose.