Sorry but I doubt cramming a unit full of critical mods is considered "using it well". What some of you guys are doing to the game in D&D sessions would be considered going 'munchkin', IE trying to maximize everything everywhere and looking for loopholes in the rules. Casual players will not do that.
Electrocutioners were always pretty great, especially with Arc Extension and Stun Module, which I don't need to be an expert to realize work very well on them.
actually all that anyone did was go "hey, vorpals get an inherent +crit bonus, i wonder if stacking that with similar bonuses is any good?" there was no complex arithmetic being done and it was the sort of thing casual players easily could have (and did!) stumble onto, unlike the engulfer issue which is much closer to your characterization of things. fireburst vorpals allowing players to aoe concuss and bypass accuracy was a similar deal, anyone willing to experiment a little could stumble onto that particular combo, and once someone did it was quickly spread through the magic of "some people are part of large discord servers."
in fact, i'm pretty sure all of the vorpal problems were casual players first and foremost. the "competitive" mp community didn't really exist at the time of critstacking vorpals, and the present day community probably wouldn't even find them all that impressive (on top of probably still not beating engulfers, vorpal snipers perform poorly in autocombat, and the current large mp community allows players to hit autobattle for pvp). the issue was easily demonstrated in casual pvp but i'm sure most of the people taking advantage of that combo were sp players