It would help the teams with a small arena and would hurt the teams that have made the effort to build a large arena. I don't like your proposition...
the 'big market' teams never do like the idea of sharing the wealth. Bill Veeck was branded a socialist for even broaching the idea back in the 1950's. But revenue sharing does help level the field, and I think overall it helps everyone and can lead to not only more competitive balance but also into more overall engagement.
Lets take team A who perhaps draw a average gate of 200,000
the 2/3-1/3 split would be 150375 for the home team, 49625 for the visitor
Team B lets say draws a average of 225,000 169173 for the home 55827 for the visitor
based upon a home and home team A would take in approximately 206202 team B 218,798 so the difference would not be huge on a game by game basis but the aggregate effect will be beneficial to the 'poorer' team.