I don't remember the part where he replaced her eyes with Pacman. Seriously though, I love that old-cartoonish style. It's very funny. Wouldn't it be great if someone animated one of the songs from the shows like that! Although, I'm not sure how you'd pull off the waggy-finger-dancey-thing with ponies...
I foresaw this long in advance. Her old limbs couldn't handle the excessive strain she was putting on them. What little left of her that was flesh and blood was being run completely ragged, as usual, but it was even worse, because the implants enabled her to push herself well beyond the limit of what living tissue can safely manage in terms of trauma. It was only a matter of time before her little support team started integrating piecemeal powered armor components.
The perk notification at the end of Chapter 53 hints that her newly-reinforced spine and sub-dermal armor are supposed to act as a mounting frame for add-on components. I wonder what kind of crazy hardware they'll rig her up with next? Just watch; after conquering her fear of heights, she'll probably end up turned into a cyber-alicorn with prosthetic wings or boosters or something and get into a climactic aerial battle with you-know-who.
Just love the look you got for her in the main picture. And the bottom two are hilarious, Blackjack truly is the one pony you could ducktape a tennis racket and a mailbox in place of her legs and shed still keep going.
A couple of others have already commented on it, but Blackjack's face does look a little different from how you usually draw it, and not in a bad way at all. It's hard to pin down exactly what, but I think it's just a little bit of difference in the shape of the eyes and jaw. Looks nice!
Pffffthahahahaaha! Reminds me of Steamboat Willie almost with those eyes below. Part of me just adores the loose Pipbuck on the plunger and that it too two rulers taped together. Nice grin for early in the morning before I'm off to work!
On the main picture though, I do particularly like how you've blended angular with thick and weighty. It's a good balance given the whole idea was that she came from the mesh of Shadowbolt and Ranger armour customised together. You can definitely see the influences of both in there to some extent. Seems appropriate too for more 'war ready' armouring too given it covers its own joints like a knight's armour than her first design that was more general 'cyber.'
Furthermore? I love that shoulder design of Rover. A small thing perhaps, but I just love the way it actually crosses over itself from the middle outwards and back. Much more interesting than just a bunch of straight down lines.