If you want to see this happen, I would make three suggestions.
First, contact your district officers this week (prior to Sunday's Executive Council meeting) and let them know that you would like to see this change.
Second, bring the idea up at your district meeting in October. These meetings are a little smaller, which gives you the chance to try and convince the individual club representatives who will be voting at the State Body meeting.
Finally, attend the State Body meeting in November and cast your club's vote.

Personally, I've got some reservations about changing the state tournament to a split format. This is despite the fact that my club's open tournament has utilized a split format for the past four years, with nothing but positive feedback. I'll look forward to hearing the arguments on this, pro & con.