<< Create a caucus within a party instead of a new party. >>
Pragmatic way to go. And, for just one example -- I'm a fierce tooth and nails defender of America's Founding Law [And I guess that makes me either a Constitutionalist or a Libertarian -- or both] -- who is a Republican.
And FReeRepublic probably qualifies as such a caucus?
FReeRepublic is an excellent idea.
Social Conservatives or Constructionist Conservatives would be the focus, imo. I'd join either of those.
Force the party to negotiate with the caucus.