Here's what I'd like to see in 5e.
As default an array. Probably 16/14/13/12/10/8, assignable freely. This is even easier than rolling for new players.
As alternatives (in the DMG, preferably):
4d6-lowest, assign as you wish. (Rules for rerolling too weak scores, optionally also too strong ones.)
Point buy that results in *lower* numbers than either of the above - probably 20 to 24 point buy by 3e rules. (Guidelines on other amounts and their effect on the campaign.)
Some more interesting methods, especially in order ones, that result in characters on average as strong as the default array. (Variations for stronger or weaker characters.)
As default an array. Probably 16/14/13/12/10/8, assignable freely. This is even easier than rolling for new players.
As alternatives (in the DMG, preferably):
4d6-lowest, assign as you wish. (Rules for rerolling too weak scores, optionally also too strong ones.)
Point buy that results in *lower* numbers than either of the above - probably 20 to 24 point buy by 3e rules. (Guidelines on other amounts and their effect on the campaign.)
Some more interesting methods, especially in order ones, that result in characters on average as strong as the default array. (Variations for stronger or weaker characters.)