Pokemon The Pokemon Punett Square, Pokemon Heredity.

[Bolt the Cat]

Here's a thought. What if they did that with Hidden Abilities?

 

[RotomRules64]

:U
That would be cool.

 

[Puff-Sun]

Abilities. Do you realize how broken Cinccino would be with Technician+Skill Link?

^this

 

[RotomRules64]

WAIT!
I'VE GOT IT!
For the two natures, we could have two seperate Punett squares. One for the raised stat, and one for the lowered.
So if we had a Quiet/Naughty Vulpix and a Careful/Hasty Ditto...
Raised stat:
stretch +ATK +SPA
+SPD
+SPE

And now for the negative...
stretch -SPD -SPE
-SPA
-DEF

We could use the two outcomes of each of them and that would determine the two natures!
...
Would be kkinda broken though...

 

[PG24]

If it ain't broke, don't fix it.

... unless you actually want Exadrill with +Atk, +Spe, Sand Rush, AND Sand Force. If that's the case, then computers needs a way to have a hand pop out the cd drive for the sole purpose of slapping.