I'm going to come right out and state my opinion directly: Half-elf sucks. It's the most underpowered base race in 3.5. If ECL could go negative, this would be the race for it. But hell, don't take my word for it. Aside from usually dominating polls for "weakest race", take a look at what a couple D&D design team had to say about it.
And in response to him.
Source:
archive.wizards.com/default.asp?x=dnd/dd/20051007aIt stands out even worse in NWN than PnP, as NWN building tends to be more combat-focused (partly due to the neverending cycle of player power builds, devs adjust dungeons to compensate, more people are forced to focus builds on combat more to compete in dungeons... etc, and partly due to most of NWN's skills/feats being combat or dungeon focused). While power shouldn't be
everything (I've played a half-elf myself for years),
it is important that there is some basic level of balance. After all, when the staff considers an ECL race/template, they will ultimately try to fit the bonuses with an appropriate ECL. The half-elf simply doesn't compare to the other ECL 0 races.
As for what to do about it, that's an interesting discussion to be had. One possibility is to simply allow the various elf races half-elf types to inherit some of their bonuses. The other is to borrow from the fluff of half-elves. Taking from the fluff of half elves on the FR wiki (which includes a mix of 3e and 4e info, but it all jives)
forgottenrealms.wikia.com/wiki/Half-elf -- half-elves are repeatedly described as having force of personality and having a tendency to be inspirational figures. Thus, you could perhaps argue a charisma bonus. On the other hand, they're also described as being outsiders wherever they go and not truly fitting into any society--this, along with their adventurousness, could perhaps manifest itself as a wisdom penalty.
So, let's assume that you take that idea and make half-elves +2 cha, -2 wis, just for example purposes. This is getting better; they can at least be a good specialization type character at ECL 0. However, their bonuses are still lackluster compared to other ECL 0 races, such as their fully elven cousins. Comparing to pure elves in this scenario
Half Elf:
+2 Ability
-2 Ability
+1 Spot, Listen, Search
Low Light Vision
Anti-Sleep
+2 vs mind spells
Favored class: Any
Elf:
+2 Ability
-2 Ability
+2 Spot, Listen, Search
Low Light Vision
Anti-Sleep
+2 vs mind spells
Bonus weapon profs (longsword, rapier, longbow, shortbow)
Keen senses (search checks w/o search mode, so can search while running)
Literally the only thing half-elf has over elf in this case is favored class, which is more or less utterly useless on CD (or most RP Servers). Even in this instance, the elf gets better skill bonuses, some valuable extra weapon proficiencies, and a unique ability in keen senses.
The half-elf gets some (honestly, pretty minor) traits from elf to represent that part of their heritage, but outside the valueless favored class: any, they have no representation of their human ancestry. I would suggest one of quick to master or skilled, but not both. Probably skilled--quick to master is the more valuable of the two human abilities, and should be left to them. Likewise, given that they lack the most unique elven feature, keen senses, and that their skill bonuses are nerfed in comparison, I'd suggest they could possibly get the bonus weapon proficiencies, but see this as less vital.
This would leave half-elf looking as such:
Cha +2, Wis -2 -- Half elves are typically outgoing, forceful personalities, but often have a hard time finding their place in the world.
+2 vs mind spells
+1 spot, listen, search
Low Light Vision
Immune to sleep effects
Bonus weapon profiencies: Elven
Skilled: Half-elves gain an extra skill point per level (4 at 1st level)
In comparison to elf, this is much more balanced. Half-elf essentially sacrifices +1 spot, search, and listen as well as the unique keen senses feat for an extra skill point/level. While the latter can be argued as being more generally powerful, I would point out that in this case, half-elf's bonus stat is charisma. While charisma is mechanically useful to the classes that utilize it, for those that don't it is utterly useless outside of RP, making it the ubiquitous dump stat. This arguably specializes half-elf in some regards more than elf--wisdom is an inherent part of several classes, making it harder for half-elf to partake, but elf's con penalty doesn't directly affect any classes. Meanwhile, elf's dex bonus can be useful to many classes and builds.
I'm open to completely alternate suggestions on how to improve half-elf as well--I think the most important thing to focus on is the title of the thread.