Honestly before my most recent break Izi, I felt exactly like that. Shieldbots were increasingly, overly viable in a great many 1v1 situations and scale up into something the enemy can't easily overcome.

Bandit was performing a tiny bit too well, thug was too shieldy/cheap and outlaw thankfully got a much needed nerf, but still synergizes really well. Dual felon's AA potential is also too high for thunderbird to be reliable.

My angle was that they were also stomping rovers on flats, buffed bandit was toasting buffed glaive, and a few other minor interactions. Will probably make a better assessment when I actually play ZK again. Still too unwell as of now.