hypothetical 3rd party

Suppose there were a 3rd political party that required each of its members to attend a yearly party meeting in their respective election precincts where they will verify their status as a voter and their membership in the party and then elect members to a precinct committee that would conduct primary elections and also choose people to serve on a county committee (which would in turn chose a state committee which would then choose a national committee).

Would this yearly meeting requirement help maintain party cohesion that could help win elections, or would it be too much of a burden on people who would otherwise "join" the party? Would a party composed of dedicated members be better than a party with more open membership? Would a rigid party structure be better or worse than a loose structure?

If the annual meeting requirement is worthwhile, what month of the year, day of the week and time of the day would be the most convenient time to have it for most people?

I would assume that the national committee should have at least one member from each state and each state committee should have at least one member from each county and each county committee should have one member from each precinct. But does anyone have any ideas about what the ideal size for a precinct caucus would be?