So I have been playing endless games against myself trying to find out, whether it really has an impact on the game, if you draw one character or another and the final conclusion is that it does.
I divided the character into three classes: average, good and superb. If the players should have equal chances of winning it can be only done by all having drawn the characters of the same class, one of them having a one class better character is not an instawin though, as still a stroke of bad luck may ruin his or her chances, not while having a superb character while the others have an average one, though. That is, if all he players are of equal skills. If their skills differ, then the better players shouldnt definitely play the superb characters.
Or, I made some house rules changes to the characters to raise or lower their class to a good level, making them all more or less equal. If you find a character in the following list missing, then hes already a good character with no need to change.
Troll: superb; his life value should be lowered or he should get rid of his regeneration ability, which makes almost unkillable, which combined with his high strength value makes him too powerful
Monk: average; he doesnt have all too powerful abilities, which makes his last ability, that is not being able to use weapons, redundant and makes him too weak
Chivalric Knight: average; the same as before, he has only decent special abilities to deserve a bad one to balance them, means he should be able to attacl anyone, though I get that its just part of his character, not attacking the weak
Dark Cultist: superb; too many good abilities, shouldnt be able to psychic attack, thats already too much
Ogre Chieftain: superb; should be able to use one dominated monster in battle only, otherwise too easy to pump up early
Sprite: superb; even while having strength value of only 1, the instant spell-cycling of two spells is againg too powerful, should be at the beginning of each of her turns instead
Warlock: superb; shouldnt at least start in the middle region and have only craft value of 4 in the beginning, it is too easy for him to get one craft and start getting up to 3 spells at the beginning of each of his turns
Assassin: superb; hes obvious, should be able to assassinate face-up enemies only, as he used to
Sage: superb; he shouldnt have his ability to choose a better move roll, already too powerful while being a spell-cycler and knowing the top card of the adventure deck
Vampiress: average; her abilities are not so good, should have craft value of 4 to at least make use of her ability to psychic attack
Merchant: average; instead of his last ability, he should be able to barter to receive sale of 1 g, anywhere he can buy stuff from the purchase or the stables deck
Philosopher: average; his abilities are not of much use, he can always choose which way to go, to not step on a bad card, while doing so and replacing makes it easier even for the other players, should be a spell-cycler with one spell at the beginning of each of his turn to use his replacing spell cards ability
Alchemist: superb; hes an unstoppable machine, I know it sounds weird, but he shouldnt have his ability to alchemise objects into gold, or at least get only one gold even for magic object and shouldnt be able to do it in the same turn, when he makes potions
Dread Knight: crap; I dont know why, but this guy ALWAYS dies, never makes it to the latter parts of the game, never. And the reason is simple, he should have the crat value of 4, so his warhorse is of some use, and he can withstand battle with most of the spirits, which normally break him along with his horse. Higher value also lets him have two spells, rendering his ability to get spells for killing enemies more usable, because usually when he kills an enemy he already has one spell in store
Ghoul: average, his ability to raise enemies is not of much use, while being so weak, should have strength value of three
Prophetess: superb; she shouldnt be a spell-cycler, already too many good abilities
Valkyrie: average; she should have one more ability and that is to be abel to kill one of the followers of the character she defeats in battle, to at least have some goal instead of waiting for some followers to die. That is, of course, if having for example a faithful hound fight for you, doesnt mean he is killed and you can have him back, if he is defeated, because otherwise shes good all right
Priest: average; another hopeless guys, should at least get his full complement of spells when he destroys a spirit and he should get it when he defeats a spirit as well
well, and thats it, folks.