Honestly with the way the US stands today, "no fundamental change" is probably the best we could hope for. Of course, I think things are generally worse now than when he was elected, but I don't blame him for the problems of crony capitalism, a completely dysfuncional congress, a Supreme Court beholden to private donors, and a national constituency that seems to shed brain cells like trees shed leaves in autumn.
Because critiquing a system as currently failing doesn't translate to, "good things aren't possible," or as you said earlier, "things can't get better," except by hyperbolic inference. You're welcome to disagree with my points and offer your own thoughts on the issues, and that would certainly be more interesting than trying to critique me as a person based on four sentences on Lemmy.