Man, such ****ty physics! My suspension of disbelieve is completely shattered.
These mechs are way too fast, they move like them fast metal ninja samurai's and ****. Why isnt it more slow and realistic like battletech?!
You bloody asked for this 
Srzly though.
It's cool that they offer some customization. From that video it mostly seems like a visual thing, which I kinda doubt will be really noticable in the fast gameplay that they've shown so far.
But boy... these mechs are some serious ugly ducklings... despite that, still looking forward to this. The gameplay looks really intense.