As a beta tester, I'll just go ahead and let you know that this is incorrect.
Well, as a beta tester you could let us know what are
the improvements and why
szablev's claim is incorrect.
Truly, so far, apart from out of the box widescreen support, code clean-up and better compatibility with modern OS, I can't see anything to justify throwing away $20 for a game I play for more than 10 years already.
Access to the source allows BGEE to fix many outstanding issues with the Infinity Engine that Asc64 couldn't address with TobEx and that I couldn't reach with the Fixpack. The softcoding of several aspects of the engine--animations are one striking example--will allow modders more opportunity to add content. There are other, smaller enhancements such as ogg support for music that are also quite welcome. The claim that these changes are within the realm of modders--much less that such mods currently exist--is false.
On the other content--additional NPCs, areas, and quests--the claim is indeed true. I think six new NPCs were released since I started this post.
Most of the worthy new content (bugfixes, animations, exe improvements etc) is taken straight from mods, with the modders actually doing even more work on the BG:EE itself (I remember at least two of the ToBex guys discussing code cleanups and improvements on the private forums, 1PPv4 included in its entirety in the game etc), while whatever glimpse we've got from the actually
new content is sub par compared to original BG(2) and reeks of modern trends and conventions (what nowdays Bioware calls "emotional engagement").
There's some truth here, but I think you're taking the wrong lesson from it. I decided to work with BGEE because it was a chance to see the promise of Fixpack fulfilled--an actual bugfree game, or at least something closer than the mess of BG2. I can't speak for the motivations of others. (Especially someone like Avenger--GemRB is the closest we have to something like BGEE's new engine, something that can run IE games on a mess of platforms. Yet there he is, contributing just as much and adding DLTCEP support for the new game.) Many of us mod the game *despite* the Infinity Engine, not because of it, and I suspect there's a great deal of interest into making it an even better, more mod-friendly platform.
On top of that, customers are saddled with yet another DRM platform that tries to squeeze itself in the scene, using the good name of a much respected game to gain leverage.
From my point of view, the enhancements are very welcome and exciting. But I'm also someone who made his modding bones in the guts of the engine, so I'm not the main marketing target--hence the emphasis on "New adventures! New NPCs!" and not "Opcode 1 isn't borked! Animations aren't hardcoded!"
As I mentioned in my first post whether that's worth $20 to you is, of course, a different question. Personally I've decided not to purchase BGEE because of the DRM.
(Seriously GOG, no preview? Get with the 1990s!)