I really don't get the hate this gets.
This is an edition of a great* game which improves some features of the original game (better multiplayer, widescreen, code cleanup, etc.), will bring it to a wider audience without dumbing it down even the slightest bit, adding content (which does not seem that great, okay, but it's not like every NSC in the BG series was great or very interesting...), improve the moddability of the game a lot, which will hopefully lead to even more good mods than already existing and also adds features (enabling BG2 classes, spells, etc.).
And as they do that for a living, they want some money for it. Where the fuck is anything bad about this?
Yes, some of it is already possible with mods, but in many cases buggy and in every case quite the hassle to get running correctly, especially for the less scripting-affine players. Even if everything of that was possible with mods (which it isn't!), you might as well say GOG completely sucks because they wrap up old games with DosBox and make them easy to use for everyone. For money, oh noez!
If they would get the idea to such an enhanced edition of, say, the Dark Sun games. Just supporting modern hardware, not removing anything, probably add some classes or races. The same game, with some improvements. Would that also be oh so very horrible?
Please, compare this to what has been done to XCOM, Syndicate, Mad TV, Elder Scrolls (I'm talking about the MMO here, Skyrim is actually an okay game), Fallout (Fallout 3 I mean, New Vegas was good), and so on.
I'd rather have three enhanced editions of a great* game than one fucked up sequel...
I do agree, however, that the price is too high. For me, the game is worth that, but selling a 10 years old game for 20$ to someone who is new to the series is a bit.... weird
*Yeah, you don't have to agree, but if you don't, you're wrong. HA!