I don't think dislike is the word I'd use for Elaine, but she's probably the hardest character to pin down (and I'd imagine write for) in the whole series.
I always thought the Bristish accent made sense, as if Elaine's family were land owners (i.e govenors) then their wealth would have to come from elsewhere. Briain makes a pretty obvious choice (somehow a dutch or French Elaine just doesn't seem right.) Plus her being one step ahead is a pretty standard part of the game (well apart from when she's a gold statue).
I think the Elaine from EMI is my least favorite, but then Lucasarts when for this whole day-time sitcom relationship for the two of the them. This ment that if generally felt like Elaine treated Guybrush more like a child than a spouse. On the other hand MI2 has the most mature (or messy) take on Guybrush and Elaine's relationship. I'm glad Tales made some headway on getting that back to a more human and capable Elaine.
(Having said all of that, I did get fairly frustrated with her in Spinner Cay - She's a pirate governess, not a middle-class greenpeace supporter. It doesn't quite wash that she didn't trust LeChuck that far back in the story, but then it'll be an interesting one to watch for another play through.)