The dogs....cool except for 2 things
Obviously that bloody racket they make.
I bet the makers regretted it, it no doubt sounded menacing and ominous when they first appeared in the show, but now they're stuck with including that ridiculously loud annoying sound in every scene with the things. Oh, except when a scene requires them to suddenly appear of course, then somehow they've managed to sneak up.
And conceptually of course, why would you have a combat robot that anyone can hear coming 2 miles away?
The other thing is the fluid lines going to it's shoulders. Not only a weak spot, but also would forever be getting snagged on things.