Its positive in that it likely will shake the neoliberal world apart. Or at least be the equivalent to the death of the Soviets in 91. The concerning thing is that:

1. vulnerable (minorities, LGBT+, anyone "left") people within America will be harmed
2. America will engage in even more genocidal wars
3. I personally fear that if America starts to lose, especially any civil conflict, that it will willing nuke itself/others out of spite.

Sure all that 3 are possible with any other nuclear/large nation that's self harming, but #3 really worries me because American brains are incredibly nuke happy. I just can't see a Soviet style turnover occurring without at least the legitimate threat of some nuclear event.