The "Blue Star" is the $30k version, in the future. The Model X is an incremental modification of the Model S into a crossover SUV, available in 2014.

I'd love a "Blue Star Performance" for $50k -- I don't need a car as big as the Model S/X, but want 300 mile range, supercharger, and 4-5 sec 0-60. I'd be ok with a roadster except I hate convertibles and would like something a little bigger, like BMW 3er size.

Huh? Jalopnik says that the Model X will start at $60k: http://jalopnik.com/5884111/tesla-model-x-price-tops-out-at-...