Is there a downside to randomizing transaction order to stop MEV in Kaspa?

Yes — blind randomization of transaction ordering trades MEV resistance for some economic efficiency. Some orderings of transactions are more beneficial to users in aggregate (sometimes called social welfare), meaning a smarter ordering could produce better outcomes for everyone collectively. When ordering is randomized without considering those benefits, that potential efficiency is lost. A beginner takeaway: preventing MEV manipulation and maximizing collective user benefit pull in opposite directions, and finding the right balance is an active area of research for Kaspa.