Considering that a "plausible" Irenicus Redemption has been written and pulled off - the Longer Road - logically, Valen's redemption would be possible but very difficult.
However, there are some minor differences. I gather that Irenicus is still considered "alive" in some way, in the Longer Road, whereas Valen is definitely, 100% undead, and a Vampire too. Romantic notions of vampires in other literature aside, some care should be taken with this.
Notably, a Vampire is a very different creature from even say, a Drow (Viconia, Solaufein). They are not living breathing creatures, they have totally different tastes where sustenance comes into play, and due to certain /daylight issues likely a rather different social life. This isn't modern day with the clubbing scene, and the vibrant night life and 24 hr shopping, the main things that occur at night would be - thievery, robbery, prostitution.
Which begs the question - where would Redemption end up ? What would be the point for a Vampire? Redemption or corruption, there must ultimately be some kind of motivation.
Redemption makes sense for most characters in that life can regain a normalcy, or sometimes one on the deathbed can die with fewer regrets / some semblance of peace. Regardless, it should make sense. What would be a "normal" life with "no regrets" for a Vampire? Given their supposed role as (un)natural predators of humanoidity (since there are many other races available in
AD&D), something that is Redemption for them is probably utterly different from what is Redemption for others. I might be weird, I think breaking free of Bodhi in the Spellhold Maze in vanilla
BG2 is pretty much "Redemption" already. After all, Vampires want to be their own powerful predator, master/mistress of their own unlives.
Alternatively, I guess it could be along the lines of "Oh, I'm redeemed. I quit being a Vampire."
Valen : You know that thing you mentioned about being good at all? I want to give it a shot, try banishing all the evil from me. See what good is left.
Keldorn : Sounds great! *Turn Undead*
Valen : Thanks, old "pal". *SPLATTERS*
Keldorn : Anytime.
So... where would that leave the Player? One less party member?
Of course, another way would probably involve some kind of deity turning her back into human, which would make more sense from a Player POV, if she doesn't loses her.. wait. All the abilities that make her outstanding, Backstab aside, are all Vampire Related...
Valen (Human) : Outstanding, My Vampire Claws are still with me!
Keldorn : The good or evil of a weapon lies only in its wielder.
Valen (Human) : Wooh, I still retain my innate Domination (3/day) and everything else too!
Pretty munchkin / lame, I think.
That said, I suppose it makes for more RP options, and Fighter Thief is still decent.
Edit : just had a really silly idea, but it was so funny it made me laugh.
The first act of CHARNAME, the new God of Murder, was to fulfill the wish of PRO_HERHIS long time companion Valen, to become Human again. This was to be the first act of Murder committed by CHARNAME in his new portfolio, though the effect would be seen a considerable time later, when Valen had time to bitterly regret her desire to be human again.
Edited by Zyraen, 30 May 2011 - 08:47 PM.