I wouldn't put much stock into getting GC's just because of a potential Biden presidency. If anything, I would wager that it remains status quo with just DACA in place as-is.

No matter who wins the presidency, it's likely going to cause a surge for the opposite party in the house/senate over time. That's why I feel like if Trump get's re-elected, it will cause a natural surge of continued outrage on the left to get more people in the house/senate elected. And you would get the same with a Biden win and get more Republicans back in the House.

If anything, the Supreme Court decision will drive a lot of the direction of what's to come.