That would be unnecessarily unfair to the people in group 1, which would have better players and thus be harder to win. It would be better to alternate like this: 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1, 1, 2, 2, 1. This can be generalized to n groups by placing the first n players in groups 1 to n in that order, then placing the next n players in groups n to 1 in that order, and keep alternating between going from 1 to n and from n to 1 until the groups are full, e.g. for n = 4: 1, 2, 3, 4, 4, 3, 2, 1, 1, 2, 3, 4, 4, 3, 2, 1, ...As an example, in semifinals phase, group 1 will be assigned players ranked 1st,3st,5th,7th,10th,12th,14th, and 16th. And group 2 will be assigned players 2nd,4th,6th,8th,9th,11th,13th, and 15th.
