I mostly agree with the guys above... running this in Triples for Rock Slide spam would be fun (I posted something like this in the BS Triples thread) but in Singles it seems counter-productive. However, I wrote a small thing here for the sake of argument, in case you wanted to try it out anyway.
An important thing to note is that no-one's really proven that Parental Bond works in the same way as Serene Grace does for absolutely everything... the effects of Power-Up Punch and Rock Tomb would suggest so, but it'd take a lot of testing to confirm. Secondly, Kangaskhan learns Stomp, which is a 30% flinch move, so if Parental Bond works the way we think it does that goes up to 60%, and gets STAB. However, using it in conjunction with Rock Slide would be better so that you have a chance to flinch Ghost-types. Losing coverage isn't such a big issue when you aren't looking to OHKO opposing mons in the first place. It's a shame that you can't paralyse Ghosts with Body Slam if you've already mega evolved, so squeezing Crunch onto there somehow would be beneficial. Let's see:
Kangaskhan @ Kangaskhanite
Jolly
Scrappy -> Parental Bond
252 Atk/252 Spd/4 Def
-Stomp
-Body Slam
-Rock Slide
-Crunch/Power-Up Punch
y/n?