We expect Trump to change how the government is structured not work within the structure. He may not do any of the things we would like to have done, but we know for sure none of the other candidates will. I for one believe Trump loves America first and foremost, he may do the country harm as in being stupid, but no one believes he will harm it on purpose.
Under the Constitution, that's not a Presidential power. If you think Obama was bad, just wait until we get the next Democrat after all the precedents Trump would set.
You want a king, as do most of Trump's supporters, which means you have no respect for limited government at all.