Here's a modified point system that statistically is very close to the 3e point system. You roll a # of 6-sided dice and pick the best 3, much like the 2e system, but you determine how many 6-sided dice by buying them with your points(i.e. 25 points is standard just like 3e, but your DM can vary this...I use 32 points in my campaign)
# Dice Points
3 2
4 4.5
5 6.0
6 7.5
7 8.5
8 9.5
9 10
For example, I could roll 9 dice for str, 3 dice for dex, 5 dice for con, 5 dice for wis, 3 dice for int, and 5 dice for cha for rolling up a paladin.
Basically this system gives the same average as the 3e point buy, but also adds quite a bit of luck into stat generation...I give my players a choice between rolling point buy or standard point buy and so far all of them have picked the standard one.