It's unfortunate there's no mod support. As someone with over 2000 hours, for me it's really the overhaul mods that give the game endless variety and replayability. Might not be a bad idea to make certain overhaul mods available anyway, even if it involves hard-coding them in.
I know they do some impressive work to port modern games on switch but even my state of the art computer struggles to run K2+SE at scale.