The pitch that we now have has been used across plenty of grounds for a while now. I know that it has certainly been used at the Etihad since it was first laid, or at least an equivalent. The pitches will always get watered before games anyway, for a number of reasons, but one of these is that it is much easier to control the amount of water that does hit a pitch, than to control how much water doesn't hit it, almost like makin the weather a more controlled variable. Wet grass can be noticably different to wet grass in how the ball reacts on contact, so its easier to keep it wet all the time, than dry all the time. Also, the heavy watering reduces friction burns to player, but as the fibres at Goodison only make up 7% of the playing area, it's not quite so much of a concern. A lot of the fibre development and usefulness goes on below the immediate topsoil, with deep, strong lines running to deeper than the grass roots, adding stability and helping with the huge stresses the pitch gets put through on a normal game day.