I always liked the idea of subversion (i might have even come up with it back in the day, calling is Psi-EMP: no credit from PA Team ofc
), however the way it was implmeneted back in the day was terrible. The whole indestructibility of stunned ships was terrible, red defence and green attackers (lol) was a major problem and would require additional thought.
However, if some of ETDs ships were changed from normal EMP to Subversion, i think that would make them distinct enough to enjoy some more life, as it would be somewhere between a Zik and a Cath, but with cloaked ships for extra comedy value thrown in. How could someone say no?
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