Changelings got wings AND horns. Changelings got more powerful from the love they receive. Flurry Heart is inexplicably has wings and horn. Flurry Heart baths in love. Less then half of love Flurry receive gives enough power to compete with alicorn princess.  
Dun-dun-duuuuun.

@Blissey1  
A hefty bit of headcanon, but I guess that’s the name of the game currently.

@Kappe  
except the last bit about the changeling drone siphoning that power back to chrysi

Ooh, idea: what if the changeling that takes Flurry’s place is the one getting the bulk of the love power… and then it thinks, “Hey, wait a minute, I’ve become so much more powerful now, so why am I still taking orders from Chrysalis?”

@PonyPon  
I guess I’ve just been reading a lot of comments from people thinking Chrysalis would be the one getting super powerful from the plan.

@Blissey1  
Didn’t I just say I got that part…?

@Kappe  
I’m guessing the bulk of love would be the one the fake baby gets.
 
They could try getting some out of the baby, because….alicorn?
 
But mainly it would be keeping it out of the way of the other, anyway.

I actually hope this happens in the show

@Kappe  
no, you see, in folklore, changelings replaced babies so the changeling could be raised by the parents. So in this case Chrysalis would have a drone replace flurry heart to raised by shining/cadance and get all of the love the entire crystal empire has for their new royal heir.
 
and then presumably the changeling would siphon that love energy back to chrysalis

@PonyPon  
But why would the love from a baby be so much more powerful and desirable than others? I get that the changeling swapped with Flurry would be getting tons of love from Cadance and Shining. I don’t get Chrysalis getting super powerful from Flurry.

@Kappe  
Um, all the love she’s getting?
 
Think real hard about changeling folklore and how it connects to show changelings.

Really though, aside from being what “folklore” changelings did, what does Chrysalis have to gain from kidnapping Flurry? Whatever it is it’s just not clicking with me.

“Enjoy yourselves while you can, my little ponies… Now it’s my turn.”
 
…Cue happy ending theme.

I’d kill for Chrysi to return in Season 6.
 
 
KILL