I totally get that its possible to get through the content with this strategy, but I shouldn't 'have to'. I have played the entirety of Bounty Hunter content using 'only' Mako and my self as a Tank PT spec. (with one eception being Hoks mission).
I have beaten named champions with 9 times my health using my tank spec and mako healing me.
Making a single piece a content that blocks story progression where you 'must' do it a specific way or you are going to fail, when my experience and expectation for all previous content was "my obvious decent spec/gear choices have 'always' worked" is no longer the case if a failure on the part of the mission designers.