As for people thinking that a Wishverse/Reset scenario somehow invalidates Willow's (or Buffy's or whoever's) growth, I don't think it has to. As we saw in "The Wish," people and circumstances in an alternate universe can be very, very different from what they are in the known Buffyverse. Take Vamp Willow, for instance. What was different in human Willow's life that caused her to be vamped in the first place? Well, there was no Buffy. No Buffy to protect her physically and no Buffy to bring out her self-confidence and teach her how to fight back, etc. She was, at best, "Season One, Episode One Willow" and, at worst, a much more terrified, beaten down and introverted Willow before she was finally killed. (I don't know exactly when she was vamped, but if she was vamped in S3, she would have had to live without Buffy in dark, scary Sunnydale for 2 1/2 years past when we saw her in S1. I think she would've been a mess.) In any case, she was not the Willow we knew in S3.
So, if Warren, for example, makes a wish to Anya, whatever he wishes for will change the people and circumstances of the Buffyverse, so that they are not as we know them now. What if his wish is simply, "I want Buffy Summers to die alone a miserable failure." (I don't think that's the wish, just an example.) Well, then the Wishverse would set about creating this exact scenario. Free will is removed. This is now Warren's will. The Wishverse is making things happen in order to fulfill his wish. The characters are playing out a scenario HE has demanded. It is no longer the natural order of things.
Suppose, the Wishverse decides that the best place to start Warren's wish is to send Tara back to Willow, who is still very early in her recovery, extremely fragile and perhaps wrongly has all her hopes pinned on Tara. The Wishverse believes that Willow is the weakest link in the Buffy chain. It plans a deathblow, the EXACT set of circumstances that will send her over the edge. Circumstances that never would have been reached if not for Warren's wish. So fragile, hopeful Willow gets suddenly eager Tara back and they make love and make love and then make some more love. Willow has more hope than ever before. She praises the universe for finally giving her the love she has craved all of her life. Then Tara is murdered. Willow feels scorned by the universe and all of her fragile, insanely high hopes come crashing down. She goes on a murderous rampage that eventually leads to her death, the deaths of other Scoobies and the death of Buffy--who is alone, miserable and a failure. Warren's wish is fulfilled and it was all started because the Wishverse preyed upon Willow's unique vulnerability, knowing it would start the chain-reaction.
To put it another way, the Wishverse is cheating. It knows all the buttons to push to get its way. The characters don't stand a chance unless they are let in on the trick. (And even then, there may be no way out. Warren's wish also ends in Warren's death.)
Using this approach, the writers can illustrate just how low the characters can go without invalidating their growth for the season, because the characters are involuntarily caught in a chain-reaction extending from Warren's wish. Can a character stop this chain-reaction if they realize what is happening? Maybe. (Giles did it, but, in this speculative scenario, Warren couldn't.) But unless they do, they are caught up in a scenario NOT OF THEIR OWN MAKING.
Therefore, I wouldn't necessarily hold Willow or anyone responsible for what happens in the Wishverse. At worst, it can mean that Willow, like anyone, can be pushed too far at the worst possible moment (not comforting, but true). Or, better, using the Vamp Willow example, it could mean that her life view was considerably changed by Warren's wish, and that wasn't OUR Willow who went on a rampage. I don't know for sure, since I don't know if there is a wish or what it is. I just know that the Wishverse provides plenty of ways to show the characters at their worst without invalidating their growth, because it is not really the character that we know.
Moreover, if Buffy and Willow et al had achieved growth before the Wishverse began, they wouldn't necessarily need to remember what happened in the Wishverse. Except for Xander, which is a problem.
Sigh. My point wasn't to speculate on all the details, but to say that the growth for the season could still be valid in a Wishverse/Reset scenario. I have no idea how the writers are going to work all this out. I wish to god I did.
Amy
[This message has been edited by Willowlicious (edited March 21, 2002).]