I can't entirely blame them though, the difficulty of the server more or less expects you to build combat-efficiently to some degree if you want to beat dungeons with worthwhile xp / rewards for your level range.
With all the current dungeons (and to be honest, I'd imagine with all possible dungeons with NWN) the player skill in managing a dungeon mechanics-wise is a lot more important than character build.
I really don't mean to brag, but I've done dungeons with a randomly (a bit of a joke build really) built cha 14 fighter/barbarian at level 9 with a Evocationist wizard (no Mage Armor, no summons) at level 10 that I've seen to become the bane of higher level groups of more mixed classes.
As skill levels with mechanics vary so considerably that a dungeon challenging to level 14 cleric, 14 fighter and 14 wizard might be fully doable to level 10 fighter and 10 wizard, it's always a hard task to balance dungeons so that they feel interesting and rewarding to more 'hardcore' players whilst still being doable to less 'hardcore' players.
Also, note that having 17 strength instead of 16 at start means you spend 3 full ability points more for a single point of strength than someone else might had. My current main is a meleer who started with 15 strength, 12 dex, 14 con, 14 int, 10 wis, 12 charisma, and he hasn't had any issues and will not really have in the future either. You can easily adjust any ability up or down by 2 to 4 points (depending on the ability) without significantly reducing the character's chances at survival and potentially strongly altering the character's skillset and personality.
Thing is, if he had had 17 strength instead of 15, he'd had to, for example, drop charisma to 8, wisdom to 8 and intelligence to 13 and for what? +1 AB and +1 damage? In the end, that is very small difference compared to the impact that good clicking has.
Though what I totally want to still see is more dungeons with ranged enemies, traps and certain spells! Preferably proper dungeons, think levels 6 to 9 and 16 to 19 would really need such. Currently hardest dungeon with satisfying rewards that is worth doing, I feel, is Swamps at max spawn. Then there are some which just are so absurdly hard for the levels that would get something out of them, that using the resources to do them is not really feasible with limited time.