I have 6u, 8u, and 10u sons wrestling, so at least for the next couple of years, would be relatively unaffected by the logistics of this type of change (others would not be so lucky). My sons absolutely enjoy being with all their friends, the ones they have worked so hard with throughout the year; they've been through all the ups and downs with there teammates all year and would be disappointed if they were not able to share the experience with them. I can't speak for the older boys, but I think they get a kick out of sharing the experience with the younger guys too.
If there was a split to occur, and I am not agreeing or disagreeing with that fact, further splitting the 6u-14u, is not the way to go... it is tough enough for the 6u wrestlers not to be wrestling with their teammates.
On the other hand, it would be nice to move the season up a little somehow, I agree with Cokely, it get's awful tough this time of year.