Mon3tr is actually Walter-tier powercreep, it just hasn't caught on yet.
It was made for the biggest, smoothest brained retard you can think of. Her buffs are literally gamebreaking (HG has always hesitated to give any aspd buffs but just gives her and everyone she heals +20% for free for no reason) and removes all the negatives of the old prototypes (which tbf are badly designed) and makes it as easy and overpowered as possible, down to her not even being able to die. That's right, if you SOMEHOW get her killed through the 10k hp and 1k heals every hit, she just redeploys back as a healer, no punish whatsoever. It's a pretty desperate attempt to sell something, a la 5th year anniversary, and we're not seeing any outrage.
You think borrowing Walter was bad, just wait until people start borrowing Mon3tr instead.