Perot was probably viable as a candidate, but there's a lot more to a party than running one guy for President. There is a truly massive level of infrastructure involved in putting together a political party as the Americans understand the term and getting candidates for governor, mayor, representative, senator, alderman, city council, school commissioner, etc.
I'd also like to see a more European parliamentary approach with more focused parties. American parties basically form coalitions before the election, so the small-government crowd is in a party with people who want government in bedrooms, or similar weird contradictions.