it's just another case of FFG being incredibly frugal in the strangest places before releasing things like JM5ks and the Inquisitor
Or poor sales of Wave 7 prompted a more aggressive power creep for Wave 8?
I bet Wave 8 has sold BUCKETS more than Wave 7 did, even allowing for the increase in player base.
Wave 8 was in likely done before Wave 7 released. I think they were just too conservative with the Punisher, as they seem to be with small base ships.