I have no problems with mana as a mage, its just not much of an issue, I always have plenty of potions, and can cast about 5-10 times before I have to drink a potion again.
Just think some didnt play far enough to truly make your characters good, the games very hard at the beginning, thats universally understood, but too many people are playing Act 1 then commenting as if they played the entire game. Making comments like Mages suck and fighters are weak...my fighter is strong and my mage kicks butt, so I cannot relate.
I'm not refutting alot of the stuff said here, I agree there should be some changes to fighter skills and the way they work, but I dont know if more skill points is the answer.