Like mentioned above, Wyll has a rapier proficiency that is not common for Warlocks and knows sword techniques (most likely from his past training with the famous organization), so making him a spellblade Warlock could make sense.
Though, I reread the Hexblade description and as it is based on entirely different patrons from Fiends to which Mizora belongs, I can agree that Hexblade is not very fitting for him. However, at the very least he should have compatible stats for Pact of the Blade playstyle and the pact itself should be made compelling enough in BG3 to fit the lore mentioned above.
Last edited by Volsalex; 19/06/23 06:50 PM.