Agreeing with Doug, making basic changes in the game makes it harder for people to get used. Remember how the type changes from RBY->GSC changed the game or how the Physical/Special split confused people for months before DP was released. That's the kind of change a change in the type chart is. The Stenchtox-Gyarados example is perfect for this, as much as it would help Poison in OUR metagame, it would shrink the number of players of our metagame overall. We will never become the standard metagame, but we should deviate as little as possible from it. New Pokemon are easy to learn, it's just one exists here and doesn't exist there. Type changes are harder, essentially requiring a player of the CAP metagame to keep two type charts in their mind, one for the CAP metagame and one for the Standard metagame.
We should be making the transition between the two metagames as smooth as possible. So, I change my old position and say that we should only touch existing Pokemon, moves, and types (deargod, do not add more) only by using them to create new Pokemon.
Originally Posted by Fat Acura
When I was like five I had this nightmare. Every boy in school had to be 'circumcised' by this weird penis-chopping machine. Throughout my childhood, I was scared of penis-chopping machines.