I was expecting this question.
I based my opinion on the released screenshots and descriptions,
Have you seen any final screenshots? Because I haven't.
and the very poorly written short stories that go along with the new characters, which, in this case are enough to judge the finished product.
Do you REALLY think they are putting their best effort into short stories that won't even be in the game? Have you ever read any of the absolutely horrid Baldur's Gate novels or stories that were released around the original game?
The new interface is atrocious and does not go well together with the color scheme and overall theme of the game,
Again, have you seen finished work or just the teasers that they have showed at times? (all while stating that its not a finished product yet)
the new areas are all uninspired
What exactly would an inspired area consist of? Have you seen the areas or are you just basing this off descriptions?
and have gaussian blur all over them, which is a poor effort on the designer`s part to adjust them to the higher resolutions.
And you'd complain if they made the new areas all high quality, high resolution since they wouldn't fit with the original game since the original art is no longer available to them.
The 3 new characters are all generic and smell of fanservice, not to mention that they will be totally unbalanced in regards to content compared to the vanilla joinable NPCs.
Fans asked for new NPC's, they got them. What was so original about the existing NPCs? Unbalanced in regards to content? How so, because they actually will have banter and back story and quests? You'd likely complain that they were just meat puppets if they had the same level of the original NPC's.
Oh, and let`s not forget the bonus arena combat type quest, which should be exciting in a narrative driven rpg because...?
Well, its not actually IN the main game, its just a nice bonus thrown in. Poor us.
Really, over the years the fan modding community has done much more, and in some specific cases a much better job at adding bonus content to the original games.
Not really. They've done a great job at many things (like the widescreen rez mod, though it has its own issues as well), but a large number of mods are total junk (The Darkest Day anyone?), particularly the ones that try to introduce new areas (almost always just rehashed from existing ones).
They have put more effort into their work,
I've done some work on mods myself and followed the modding community since the games first came out. There is a ton of effort on the part of the modding community, but I don't seem to recall any of them doing it as a full time job. And again, you have yet to see a finished product, so this is just conjecture on your part.
and they made it availabe for everyone for free.
Well 1) they can't legally charge for it even if they wanted to and 2) did you expect a company to release an enhanced version for free?
After that, I think it is disgraceful that Beamdog dare ask money for their "enhancements".
yeah, how DARE they ask for money for making the game run natively in modern OS's (and more than the original ever did) rather than using complex hacks and mods (and with GemRB* it still doesn't handle everything in the game properly).
The point of what Beamdog has done is to essentially modernize the game for people that want a quick and easy way to play it on modern systems. Yes, we have BGT and BGTuTu and the Widescreen mod, and a dozen others that fix, tweak and otherwise enhance the game for us, but its a bit of pain to get it all running. Every time I play these, I have to go find a mod list to get the enhancements I want, make sure I install them all in the correct order, and even after that sometimes things still don't work.
Most new players and many old players don't want to deal with that. That hour or more that I spend just trying to get it installed and tweaked is time I could spend actually playing the game. I don't get that much time to game anymore due to work, family, dog, and who knows what else, so I'm extremely appreciative of a version of BG that I can play on a Tablet (and has a UI designed for it unlike the GemRB* port) if I like, or just download, install and go on a modern PC.
And I'm happy to pay the people that put the work into making that. The fact that it has sold so well and that the vast majority of posters on their forums are supportive of their efforts would indicate that you are in the extreme minority on your views.
* I mean no disrespect to the people behind GemRB, its a phenomenal achievement. Its just that its a hobbyists tool and will likely always be in a state of development like most open source software.