Pro's / Cons of Multiple minority (sized), narrow-advocacy, parties

This question is asking for discussion about starting multiple grass-roots, single-advocacy, parties at the state level, in order to elect state officials, Congressional Members, and Electors for President.  Hopefully, that should break this country away from from the Liberal-Conservative mindset that deadlocks Washington, where each party has so many of its internal conflicting interests  it becomes dysfunctional.   No party would have anything near a majority in Congress.  So, for any legislation to be passed, there would need to negotiation between the various, small, parties into coalition sponsored bills.  The presidential candidates would also have appeal to a wide range of parties.


Examples of single-advocacy party names:
(feel free to suggest more, and some opposite pairs)
Minimal Governmental Control
Greater Federal Control
Greater State Control
Gun Control
Minimal Gun Control
Larger Safety-net and Healthcare
Minimal Safety-net and Healthcare
International Intervention
Minimal International Intervention
High Employment
Free-Market
Minimal Debt