Before I respond, I really commend you on being primarily a 'Superstar Mode' player, and hope they give you something to work with by Madden '11, since its obvious that mode has be really looked over like crazy.
But coming with your comparison with the QB sneak being ran 20 times, and the straft being incorporated 20 times, I think its like comparing oranges to apples...
I say this because, hey, if you have 4th and inches 20 times in a game, or 3rd and short 6 or 7 times a game, and a QB sneak is the perfect play...hey...you gotta do what you gotta do. However, you can prepare your defense for it by jamming the middle of the D...
When performing 'Straft Catches', 'Spectacular Catches', or 'Rocket Catches'..its not something you can catch the defense off guard for (or at least...it should not be something you can catch the defense off guard with..). 'Straft catches should be (95% of the time) performed by an Elite player that occurs maybe 3 - 5 times Max a game...(I really think about 2 or 3 times max...but w/e)...
Also it should be contested by the defender. And 99% of the time the defender stands and watches, which is NOT realistic at all. Especially everytime its 3rd or 4th and long and you no the 'Straft catch' is coming..by Larry Fitz or Wes Welker
...which shouldnt be the case -- ESPECIALLY uncontested.
So basically my case is this:
QB sneaking can catch a defense off guard even if it occurs an more often in one game than another, and basically if you QB sneak at will on 1st and 10 (for example)..your only setting yourself up for failure.
Rocket Catching, Straft Catching, Spectacular Catching should happen at a very limited time by mainly an Elite Player that with the defense actually reacting to it.