Do you really think that’s necessary?
I mean… there are seventeen types. Five of them are associated with status conditions. Honestly, I’d kinda dispute associating sleep with Psychic; there’s only one Psychic-type sleep-inducing move, while Grass and Normal have three each, not counting Relic Song). Electric with paralysis is a little off too, since there are actually quite a few non-electrical sources of paralysis like Glare and Body Slam. Why single out Water as needing to have an associated status condition?
Besides, Water is already a powerful element, and Rain is already a powerful field effect. There’s no need to make them both stronger by linking them with an effect that dramatically increases a team’s ability to use devastating moves like Blizzard and Thunder.
