I never saw an alteration on rules which improved the gameplay...
Well, your choices are to either get over it, or walk away. Because the original rules are designed for a human player to be interpreting them and outputting the results. That doesn't exist.
And you still din't showed to me an single case of an game bending the rules and making the game more fun...
Quite the contrary, there are TONS of examples of games bending the rules and making the game worse. Low magic age for eg, decided to go for cooldowns over spell slots and now, is implementing spell slots since nobody liked it.
Yes, but some things are broken without redemption: Undeads have no CON score in PNP, while the game half-arse it with a CON score of 10 which actually makes them weaker, incorporeal creatures have STR drain attacks while the game gives them a d4, same issues with constructs, no "at will" abilities usable by monsters, no recharge for Dragon Breaths, arbitrary familiar list with no chance of expansion... the list goes on and on. Was it really necessary to make these changes to preserve gameplay?
Yep. You are right.
Enemies on NWN1 also has RETARDED AI. Undead clerics casting heal on themselves for eg is the most ludicrous thing.
NWN1 also hardcodded a lot of spellbooks and feats which made pretty hard for mods like PRC to make the game more P&P like.
The mod who adds Dread Necromancer class for nwn2, had to half implement most Lich "features" at lv 20.
