Y'know, I don't think it is that important that Tresser have a lover, since as far as we know he doesn't. STOP THAT BUSIEK. Just STOP. Frankly even without the painful paper-thin absence of foundation for Tresser being here, it's a far, far better literary choice to say "for Donna Troy to have a sister," since Donna frequently hasn't, and the bizarre mess of her relationship with Diana provides a far more poignant set of complications to the question "are they wrong" than freakin' Tresser.
In other, non-Wondy news...
Hmm...but what's exactly happened to Tommie?
Either she's human now or she's a robot now would be my guess - our version was a robot, but the Clara Kendall version was a mutant human, right? (I could be wrong, that was many issues ago and about the time my attitude toward the title was shifting.) So maybe they made her herself here (hence a robot, hence different for her), or maybe they made her human (if she were a robot in the false reality).
I think she's back for good at any rate. That's a lot of panel time to go to someone who's really got nothing at all to do with the ostensible storyline or its ostensible main players to just throw out by the end of the series.