If anything should Wyll have one level of Rogue as well? Per his back story…
BTW, the above quote is from
another thread but seems relevant here. I confess that since we got more recent confirmation that Larian are still intending multi-classing to be part of the full release, I have wondered if they've not always intended Wyll to start with at least a level of rogue and a level of warlock. That would make sense of them including that otherwise somewhat random thief element in his backstory, give him his rapier proficiency (on the basis that he was a rogue before he was a warlock) and give us a less evil choice of rogue to take along on our adventure.
It would make it even more important that his stats were tweaked to give him better dexterity, but it does seem an alternative way of making him plausible as the Blade of Frontiers than making him Pact of the Blade when we meet him.
I don't have enough 5e knowledge to understand how good a multi-class option warlock/rogue is, but from some quick googling some people at least think it's a decent combo.
