I hate Come and Face the Strange quest. Period. It's easily a quest with highest reward in the game (4 more skill slots + Euphoria mutations? Damn, nothing compares to this) and it's the most out of character quest in the entire trilogy. 

Anyone who have read the books knows what i mean. BookGeralt would never look at project that enhances mutations and be like "daaaaamn :D let's try it. Nobody to supervise it? YOLO."

He was cautious. He was sad about the fact that mutations altered him. He was victim of some extra experiments that resulted in him losing his hair pigmentation. There's no way in hell that Geralt of Rivia would stumble upon mutation enhancer and just enter it to mutate himself even more, without contemplating about side effects or his history with Trial or Grasses or his regrets about being a mutant.  

But that reward tho... i am greedy little gnome and i can't let it go. So i made mod that enables mutated status from the very start of the game. 

Remember to use Script Merger if you have any other mod that edits the same scripts. Like my own More Skill Slots