They can do what gears of war and halo do and have set load outs.
They could apply it more so to competitive.
I really like your roaming idea...but i purposely hold my nova bomb in comp to shut these down, so the immune may not work.
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In your instance, a nova bomb would essentially knock someone out of their super. Their benefit to being supered is that they should survive, assuming they run for the hills of course, but you would have countered their super with your own.