RE: Call Of Legends/rotation?
BW on could never happen because it would mean that UD, TR, and Call only got one season to be used. And it only leaves us with 1 set. They would NEVER make a rotation that only leaves us with 1 set to play with.
It doesn't make sense from a playing point of view. There would probably be no variety, or at least, very little variety. I remember back in the day when we only had base set.. there wasn't much going on. Haymaker only really came together after Jungle because it needed Scyther and Wiggly, so really, what you had was Alakazam + Chansey.
From the money point of view, why would they make it so that all of the other sets they sell become obsolete? Can you imagine how upset Target, Toys R Us, and other stores would be if they suddenly made their entire inventory unsellable except the latest one? And if there's only one set that people are trading for/playing with, after everyone gets most of the cards in the set, there's no incentive to keep buying cards until the next set comes in.
And from a PR point of view, image all the upset players there would be. Imagine having 90% of your trading inventory completely wiped out from one day to the next. It would be chaos on the internet and in leagues.
It just won't happen because it's not economically feasible, for the company or the game.