It seems like a reasonable approach, especially for the undecided. Personally, I don't get that excited by food, so I don't spend a lot of time weighing the merits of one choice over another. 30-45 minutes later I feel the same regardless of what I chose.
Sampling sounds like fun, but I do worry about some of the public gluttony. Overeating is terrible for one's health, so as long as the sampling is small, the caloric intake can stay within an acceptable range.
My brother-in-law cruises regularly and now weighs in excess of 300lbs (he weighed only 180lbs 5 years ago). He always orders multiple entree's and appetizers, and usually all the desserts. The difference is he actually eats everything! He gains between 10-15 lbs every cruise (and then loses a few in between), and uses his weight gain as a measuring stick for getting "value for his money".

Gluttony is one of the seven deadly sins as they say.