i don't like this idea that all we are meant to be making is OU, because it ends with people trying to give the pokemon the best moves possible, just to make sure it is. It happened with scylant which has alot of moves that don't really fit flavor-wise, it nearly happened with the mummy as well.
Make the pokemon, give it moves that it should get, but don't go out of your way to make it top tier OU. Thats why i think the mummy creation has been much more successful then scylant.
With the mummy there was a basic idea and then people went with the moves that actually fit, instead of just overloaded it with every move possible to make sure it fit into top tier OU. People let it fit into place and it looks like its going to sit comfortably on the BL/Low tier OU level.
Where as scylant got a ton of moves that it really didn't need because people were worried it wouldn't be a top tier OU. IMO Things like earth power,fire fang and superpower didn'y really fit but people added them because their has been this notion that it had to be top tier OU. if you took those 3 moves away and whatever else didn't really fit scylant it would have still fallen into place in OU. scylant's movepool,abilty and speed stat scream of fanboys wanting to give the thing every possible advantage it could get and getting it as close to broken as possible without being uber.