I decided to test to see if this was a viable way to play and did a match with very minimal shooting and no point capturing. I was essentially a giant shield for my allies.
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I actually could have won that match if my teammates would have taken the advantaged and actually shot at the tanks too busy shooting at me to notice them. Unfortunetly, there tactic of waiting for me to die then walking out getting shot at constantly didn't work out for them :/

I actually wonder if I can get good enough at this that I can start doing this in simulator/realistic with great effect.