The biggest acts at Woodstock '94 were CSN (again), Santana (again), Aerosmith, Peter Gabriel, Green Day, Red Hot Chili Peppers, The Allman Brothers, a few other "big" names.
There was no way it could live up to the original, and it absolutely didn't. Repsecable bands, not many with quite the same legendary status as the original lineup though.
Then can Woodstock '99 featuring Limp Bizkit, Korn, Bush, Insane Clown Posse. Notice a trend: the more Woodstocks there are, the crappier the bands get?
A fourth pass wouldn't be better.
I still say of all the bands, Sly and the Family Stone had the best set.