Haven't seen anyone post any extensive research with control undead so I thought I would do the liberty of testing its uses and showing you all what to look forward to. For those who don't want to watch a 7 minute video, here is the low down: This ability will be useless in MoP but will still be fun to mess around with in subtle areas.
1. There are no undead creatures currently in MoP beta
2. The dps of the controlled pet is way to minuscule
3. Why give this to us in Mop instead of wrath?
4. Going into a different area gets rid of the pet