I don't know if it has been suggested. Heck I may have suggested it.
1) Come up with a character concept.
2) Try to imagine the stats this character would have.
2.5) Lower the stats to the bare minimum with which you can evolve into your vision.
3) Ask the DM (and other players) if you can use those stats.
That means no buying, no rolling, no excuses.
Are you kidding? That's just the beginning of the excuses.

"My concept is Thurgar Moradinson, an Outcast Mountain Dwarf Barbarian descended from an unbroken line of Legendary Dwarven Heroes dating back to when Moradin himself created the first member of his clan. Unfortunately his entire clan was slaughtered by orcs when he was a child, leaving him the sole survivor. Naturally he hates all orcs and half orcs. He's gonna need an 18 Str (+2 racial for 20) to show his innate strength (demonstrated by his ability to kill the orc who slew his mother as a child before he had to flee), an 18 Dex (demonstrated by his ability to evade and escape from the orcs after he avenged his mothers death), an 18 Con (+2 racial for a 20) due to his innate dwarven hardiness and growing up in the wilderness on his own. Oh, and an 18 Wisdom (because he ain't no fool), an 18 Intelligence (he had private tutors before the orcs came, and was considered a child prodigy), and an 18 Charisma - he's a natural leader of dwarves and is immediately respected by everyone)."
"Don't those seem a little high?"
"Don't stifle my creativity!"