Quoted myself from another "Catcher" Thread:
Three words:
BUILD
BETTER
DECKS
I can't wait until Catcher releases. It'll change the game, most definitely, but not in the way everyone is expecting. Bad players will whine about not being able to set up and having their basics Catchered blah blah... and GREAT players will learn how to counter the "Catcher" and conversely, use it to their advantage. Some decks will become less playable, while other decks will begin to emerge with new strategies better utilizing Catcher in their game plan.
Most importantly, Catcher increases the predictability of the game and decreases the importance of coin flips, something I'm sure everyone can agree is great for the game. There's nothing worse than whiffing on Reversal, Reversal, Junk Arm - Reversal while your opponent flips 2-3 in a row and decimates your setup. With Catcher, everybody flips heads, and everyone can PREDICT and PREPARE themselves to being Catchered.
This means thicker basic lines, TIGHTER decks, and the need for more correct play making decisions. If you ask me, catcher will require an INCREASED level of skill and will ultimately weed out the weaker deck builders and weaker players in favor of those who can prepare and maximize Catcher's potential.