Can we change Blitz from a Tank/Fighter to a Tank/Support?

The logic behind it is that Is mostly used a support, and according to rito- "A skilled support gives their team the edge it needs to claim victory, and can turn the tide of battle with just one well-timed play." (aka his grab) Also can we take off of the supp list? don't really see how she got on it (if u know plz tell me)