That kind of stuff could just be your own personal twist. It doesn't have to be specified in the rules of the challenge, for example, I could say "I'm going to do a Fire monotype in Sapphire, but to make it a little more interesting, I'm not going to use the Flamethrower TM" or something along those lines. There's really a lot we could add to our challenges without them being specified in the thread. I think we forget that sometimes. There doesn't have to be a thread on this forum for us to challenge ourselves in game, you know. I never had threads back when I was bored during the summer, I just thought "hey, I should play Ruby and only use grass types, that'll be interesting." Didn't even know that had a name, haha.