I understand what you are saying Chopper. It's true, the Walkers are not shown as often as you might expect. I am enjoying the storyline nonetheless. Yet, I don't know why they do that.
FWIW, I've notice on nearly all tv "horror" shows like Walking Dead, Vampire Diaries, Being Human and even True Blood (HBO), as time goes on they have less & less scenes which show transformations into the zombie/werewolf/vampire. I don't know why that is.
It use to be that was the fun part of the film, to see the transformation or the "monster/creature" itself. I remember being awed the transformation scene of "An American Werewolf In London." My favorite part of the movie even if they've come a long way since then. I still love that scene.
TIS