With some tweaking those could be use used with the harden armor we have now, like the movement upgrade removing restricted. Or we might get something similar in a later book. Wakshaani, recreate this for 5th! Even if it is only a houserule to be posted here or in the child board of GM Lounge.
I had a rules prototype together for it, in a VERY rough form, but, my space allotment wasn't there. Some of the other stuff I did up didn't make it either. Totally fine and part of the process.

The balance isn't that hard, but the game balance is. Cyberware's financial cost can be partially compensated for via Essence, but a suit giving a similar Strength boost doesn't have that downside. To balance it, you kinda need it to be more expensive than a cyber version, or less-good in a different way. If not, then you abandon cyber.
Case in point: Smartgun links. How many people take them in their eyes, now, when glasses, goggles, or freakin' contact lenses do the same job for less money and leave your Essence untouched?
Case #2: How many people take Datajacks when 'trodes are every bit as good but are cheaper and don't cost Essence?
Realisticly, an exo-skeleton built into an armored suit should be less expensive than cyberware. If you made it, say, a thousand per +1 Strength, you crush both Cyberlimbs and Muscle Augmentation in one pass. So, you have to compensate for that in another way, or you jack up the price to, say, 20,000 a point to make it competitive, but then you chew on immersion like crazy. (Wait. Cybereyes cost 100 but glasses are a thousand?!)
It's a tricky thing, but I wouldn't at all be opposed to going back to it at another time. Like I said, I'm a huge fan of Bubblegum and similar things, and like a proper Battletecher from the wayback, I love my big stompy mecha too. Slotting in some reasonable stuff is possible, but it can also shake up the world a bit, so you have to approach that carefully. After all, *I* might think it was cool for all cops to be stomping around in 4 meter tall suits instead of patrol cars, but making it the norm changes a whole Hell of a lot of the setting. As a writer, I'm here as a caretaker of the franchise, not a mighty GodKing. So, you go carefully.