Beginner Shortboard Advice

Before you quickly convince me this is the bad way to go... Is there such a thing as a high quality beginner shortboard, particularly for athletic, tall people? I've read a lot of literature about such a board not really being out there, nor recommended. That unless you're blessed to live next to waves and can surf everyday, that you really should go to mid length or crossover next....But for someone not necessarily starting from complete scratch, who can catch chest high waves and can stand up on unbroken wave on a longboard, does such a beginner shortboard exist for tall guy? Perhaps one that one can also keep around for a long time?