Trump is against outsourced labour, the TPP and globalist policies in general. They're extremely damaging positions for the corporate elite. And he repeatedly called out big donors, I don't know what you're talking about.
Could you explain why a conservative Supreme Court would be bad? Because they wouldn't encourage a gun grabbing frenzy?
No, because there are probably people are lining up to challenge Citizen's United. Citizen's United is what allows billionaires to contribute as much as they want to campaign contributions, and who does this doesn't even have to be transparent. These are the people who are cowardly controlling the country from the shadows, and are a huge part of the reason our country is in the terrible shape it is in. In return for these campaign contributions, recipients and power don't just do innocent things like come to a donor's wedding, as Trump had Hillary do. Oh no, they've pushed through policies that benefit the few at the cost of the many, from the Republican's party-wide refusal to even admit climate change is a real threat (and when they do, such as Marco Rubio, they claim that it would be unfeasible to address), to making it illegal to film in factory farms, for one example.
And while overturning Citizen's United might not solve these problems overnight, if the wealthy aren't able to bribe our politicians with any more money than we can, and it is all transparent, then maybe they will address the needs of the many, and the wants of the few. But a conservative appointee is all but guaranteed to uphold the ruling, and we'll be stuck with that ruling until at least another judge passes away. This is exactly why the Republicans won't allow Garland to be appointed: they are gambling on winning the election. And the Republicans rely heavily on lobbyist and contributor money to keep going, especially as more people realize how corrupt the GOP is.
And I haven't heard Trump say once that he'd put an end to this. If he would do this, then maybe a Trump presidency might be worth it (assuming that what the critics say would happen don't happen). Getting rid of the non transparent, unlimited, and inherently corporatocratic unlimited campaign contributions that Sanders has pointed out so many times, and is one of the reasons he has attracted large crowds, will be so good for our country.
And Sanders is also against outsourced labour, the TPP, and other horrible policies. But he also has explicitly said that he will make these sorts of campaign contributions illegal, and I hope that the people will come down like a ton of bricks on those in Congress who try to stop it. And he isn't extreme like Trump. He hasn't proposed killing the families of ISIS. Or forcefully deporting illegal immigrants and their families, even if those family members have never lived outside the U.S. And he doesn't draw crowds who have vagrantly started as many fights like Trump has.
And if Trump really wanted to help, he'd name all of the people who have bribed politicians, and let the people decide what to do with them (protest, boycott their businesses, make them explain themselves) but he chooses allow them to remain anonymous.