I think they should have embraced the most common, beloved character generation system of 4e.
Roll 4d6, drop the lowest. Repeat 6 times. Then do it a seventh time, and drop the lowest of the 7. If your DM catches you, claim that's how the rules say to do it, and your last DM always let you do it that way. If he shows you the PHB, express shock that you are wrong. Review your results. Are your first 6 rolls awesome even without the 7th? If so, apologize and remove the 7th, and keep the remaining rolls. If not, apologize and reroll from scratch. Review THOSE results. Are they awesome? If so, keep them. If not, make puppy dog eyes at the DM and ask if you can reroll because your stats "don't fit your concept." If he lets you, do so. If not, grumble about how your character is unplayable. Act sarcastic and depressed, and make it clear that you will not take one moment of pleasure in this campaign if you are forced to play this character. If the DM does not relent, have your character do stupid things in game. When your character dies, proclaim that he would have survived if he wasn't gimped. Reroll a new character.