I know native ports are important to some folks, and I know you're one of them, but would you mind explaining why? Maybe you've done so in the past and I didn't internalize it.
Larian's own reasoning here appears to be squeezing it for more performance, and with Linux users now accounting for 6% of English-language players, I suspect more companies will find this to be worth the effort as that percentage rises and Windows becomes more of a pain in the ass.
EDIT: reworded statistic for accuracy