Really?
 
They tried to blow up reality, I doubt world domination by changelings is worse than this!

“Electrical energy, Miss Tyler. Every atom in existence is bound by an electrical field. The reality bomb cancels it out, structure falls apart. That test was focused on the prisoners alone. Full transmission will dissolve every form of matter.”
 
“The stars are going out…”
 
“The 27 planets… they become one vast transmitter, blasting that wavelength…”
 
“Across the entire universe, never stopping, never faltering, never fading. People and planets and stars will become dust. And the dust will become atoms and the atoms will become… nothing. And the wavelength will continue, breaking through the rift at the heart of the Medusa Cascade into every dimension, every parallel, every single corner of creation. This is my ultimate victory, Doctor! The destruction of reality itself!”
 

 
“Soon, my changeling army will break through! First we take Canterlot, and then, all of Equestria!”
 

 
Worse than the Daleks? If you say so.

Changelings don’t want to kill anything that’s not a changeling.
 
@HamburgerTime  
Daleks don’t either.  

Yeah, stairs are no problem for changelings.

WHY DOESN”T HE WANT TO HUG MEEE!