As Chinese President Xi Jinping brainstorms on what his country needs to get its economic rise back on track, Donald Trump probably sits high on his wish list. Although the U.S. presidential election is still more than 15 months away, the specter of a second Trump administration is already a hot topic in Asian trading pits. Trepidation abounds given the trade wars, unhinged rhetoric, coddling of autocrats and general turbulence that characterized Trump's 2017-2021 White House stint. A cluster of illiberal leaders, including Russia's Vladimir Putin, North Korea's Kim Jong Un, Saudi Arabia's Mohammed bin Salman and Turkey's Recep Tayyip...