This isn't a stats discussion. This is a mechanic discussion.
what differs from stats to mechanic stats?

for example, the brass beast just hass upsides and downsides.
(damage up, walkspeed and spin up speed down)

but for something like the eureka effect, vaccinator, rescue ranger can change the gameplay greatly.

I was thinking of this:
damage done fills rage meter
when rage is full, press taunt while spinned up to provide a deffencive buff to teamates in a small radius