Erk, the touchy-feely version of Choose Your Own Adventure? Ending is dependant on how you feel, not on decisions you make? I suppose that approach might be new - if slightly queasiness-inducing - but how is a book gonna challenge the reader and make them think about things if it simply gives them the ending they felt like reading?
Applied to Lone Wolf books, wouldn't that mean that if I played The Chasm of Doom when I was in a bad mood, violent death would ensue and Vashna would rise and conquer Magnamund for Naar, thereby putting me in a worse mood than when I started?
I dunno, maybe it'll work. But I think if anyone asked Lone Wolf to take a moment to get in touch with his inner feelings before deciding on his best course of action to avert disaster, he'd hit them over the head with the Sommerswerd.
'How do I feel!? Like I've got +8 Combat Skill, and I'm gonna take down anyone who even looks at me funny, that's how!! (Two or three misjudged boss fights notwithstanding.)' ;D