It's really your own opinion. For example, I think cruicble will help more than metal jacket because it's another layer of defense along with fountain of renewal, while it enhances the effect. While you think metal jacket can be more useful due to the big defense it gives. But really doesn't matter if either of the builds can make you really Tanky. if you always use metal jacket then I suggest to look at enemy build and if they build mostly Crystal take atlas instead. And becareful of bone saws if they are weapon.

High five, I love to just bait people, walk around. When I'm low health and all of them are chasing me, I lead them to my teammates in the bush and ' ACE! ' ' YOUR TEAM HAS UNLEASHED THE KRAKEN! ' *Ending music*

I do know that i have dont have much cooldown reduction thats bec i intend to stay alive and most of the time i survive a 3 v 1 fight and make a comeback. But yes I agree with you that i should have gone with the crucible intead of the metal jacket but it just doesnt allow you to continue a fight of attrition and in most of the time i prevail due to my metal jacket taking anything that enemy is giving me cause they basically cant just do anything to you .

Overall i thank you for saying this cause i dont see much catherine players win a long blood fight against my build though if they choosed a tanky one it or the one with clockwork spam then i would probally lose or make em retreat.

Your build is quite good, but you don't have much cooldown reduction, I'll get an warhorn instead of Eve of harvest, unless you think 25% cooldown reduction is good enough for you :)

Your tension bow along with aftershock gives you a really charged up stun, but you don't have reflex block which can come in handy sometimes. However you have fountain of renewal, which works kind of similar to reflex block, both saves a life, anyways. Though crucible boosts the damage you dish out and enhance fountain of renewal's effect. I'll get crucible and swap metal jacket out, since your passive gives you armor. But this is just my thoughts.