I know the recipe for 3 shinies now, I don'k think it should be this easy to get shinies.
Randomnly Rotate Shiny Configuration or Make bred shinies unshiny
I don't know if this already happens but in gen 4 and onwards sandstorm raises spdef of rock types by 50%. Since sunny day and rain dance up their respective move types by 50% already I would like to see this implemented if it hasn't already been.
also since move typeing is already gen 4.