Fixing Wiggs would be very easy.
I've narrowed down why Wiggs is so OP and broken. It's the health gain on crits. That should only apply to Wiggs or not apply to anybody at all as it really should just be removed. There is no reason ...
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Wiggs teams are quite slow, because Ackbar and Lando provides nice speed bonus for rebel allies. Just find good speed team against them and they are very easy to defeat. Combine speed with good dmg (result of the combination is basically: Rey :) ).
