A few days ago I was joking with someone how I intentionally didn't include Wyll's potential evil epilogue ambitions into my original post because he's just a nice guy. I truly have no idea what Wyll's evil ambition could be
There used to be an easy answer to this in early access. Lean into his self-indulgence. At the end of the journey he decides that's who he really was the whole time and the heroism was a convenience of his bestowed abilities that affords him the luxury. He didn't even particularly hate Mizora, the past he shared with us was remembered fondly not just because of the indulgence but because he was actually getting shit done and she enabled that. This would put it a lot more in line with Ascended Astarion and Justiciar Shadowheart at the least. Rather than a cartoonish bully you get something more like a "Good Tyrant."
But with how they ripped the central pillar of his personality out of his backstory they wrote themselves into a corner. What does someone with imposter syndrome and low self-confidence (the WORST choice they made about his rewrite) do when they embrace evil? idk go full megalomaniac I guess.
