There's already a Monster Hunter Wilds mod to change your appearance without a DLC voucher

Monster Hunter Wilds has an impressive character creator, letting players make all manner of Ronalds McDonald and Hatsunes ...
eTeknix

Mod Fixes Stuttering Issues in Monster Hunter Wilds on PC by Counteracting Capcom’s Anti-Tamper Technology

Not only does the mod greatly reduce stuttering, but it also fixes some crashes that were caused by the same technology. It seems that Capcom’s protection system is a real problem for the game’s ...