There is a reason my Lego & Templar were taken to 250+ earlier than some characters, other classes. Because they can Tank.
For myself the obliteration of Unbowed for both the Lego & Templar never had an effect on my use and survivabilty of my Lego.
From early back in the dayz I always ran the same build, thus performing the same function in a group. PB/SB/CS/WF.
As for the Templar not having Unbowed available, it has wrecked the Templar for me. I'm sure Livid has found a home for some, but it changed the rhythm of tank then attack for me. Unbowed made it easy to gain gaurd and knock back surging eneny giving room to pop off WH/SP with less interruption.
As far a charging builds go, it seems some are more steerable than others. Never noticed the stamina drain when running Lil Elvis but I will certainly now be watching for it. I'm a bread & butter kinda scrub. I like a dagger in the other hand that ensures more gaurd.