Not sure his tax returns would tell how much he's worth. I know mine don't tell my net worth. We'd see his income, just as our tax returns would show, which could be the whole story or nothing meaningful at all in his case. I think he should release them as a matter of presidential tradition and the fact that he said he would if he won, but I don't think they contain a smoking gun against him. Maybe he plans on releasing them in the future? Who knows.
I do know he ran a brilliant campaign, even if it was only picking the right people to run the brilliant campaign. Taking down all of the Republican challengers and H Clinton was a pretty remarkable feat. I'm hoping that creativity begins to show up in his presidency at some point soon. So far I haven't been blown away, but haven't been disappointed. I simply voted for him for 2nd Amendment protection, revamp of our porous southern border, some tax reform, and well, not Hillary.