Seems to me that the conservatives need to do at least 2 things:
First, if they really want this changed this year swamp the party leadership, and/or a legal challenge.
Second, Get on the ballot as precinct chairmen in all the districts, win, and replace the GOP leadership with conservatives.
That’s the exact course of action.
I have to caution people, again, that it’s the VA folks that get to decide, because the state parties have this jurisdiction.
A state party requirement like this would generally favor the conservative candidate, provided the rules are applied equally. Especially the district requirement. This isn’t exactly a liberal rule.