game workshop have changed the devastator legs armor and helmet:

http://www.games-workshop.com/en-GB/Devastator-Squad-2015

now all power armor have additiona reinforced/stabilizer on their leg and additional pointer stuff on their helmet.

that give a distinct appeareance for the devastator: something important in a videogame: you can know what class is an enemy/ally not only by a weapon but also by is silhouettes or some detail.

I like it, especially the helm.
Apo has the same kind of optics though.

Would be cool. Adds some more customisation to the game. Maybe upgrades?

They seem like cool armor skins.

Yes, yes , yes to everything. Even the cherub. I want a cherub

Yes, the more diversity the better!

I don't know how I feel about the flying melta baby. But I really like the idea of stabilized leggings and optic helmets to set devastators apart from others.

Welcome to the Grim Darkness of 40K where Vat-grown "humans" are turned into Servitors, including Cyber-Cherubs.

And I voted yes to the OP.

I knew they existed, and I like the inquisition and high command SM models with cherubs, but I feel they really could have build a psuedo robo-cherub that doubled as a melta bomb

I like the new GW designs. It would be sweet to see some enhanced targeting visuals in EC associated with the upgraded optic attachments for the helmet. The current generic crosshair when in 3rd person mode leaves a lot to be desired.