And lrf aren't supposed to hard counter support frigates. LF are and they cant get anywhere near those guardians. Maybe if there anti-anitmatter abilites had the same range as repulse, throwing a couple of light frigates in there would actually HELP against somethign that strong, whether it be disabling it for a brief time (kobalts) stealing their am and giving it to your ships(disciples) or making it cost additional AM and increasing the cooldown time (skirmishers). THe problems is they can't reach. I don't think boosting the range of those abilities to match that of repulse is too much to ask for. For any other race you can say "ok for those unoits I need these units to counter them and for those you need these" but currentlythe counters to repulse lie only with Vasari (the orkulus being immune to repulse, and bombers able to penetrate those thick shields) and their only soft counters, for the tec you just have to take it and hope you come out on top.
In regards to JJ's "super unit"
I suggest either giving each race a unit advantage
Each race does have at least 1 unit thats significantly more powerful than its counterparts, the difference is 1) lums are at least 3 times as strong as ships of the same type 2) lrms are such a dominant strategy. Illuminators start out at tier 3 with an ability its brothers have to research at tier 4, splash damage. It also has a much larger AOE than cluster bombs or charged strikes, removing the spreading out of your fleet as a viable counter. But it also has another ability on top of that, the illusions. The infocard says something to the effect that it makes the illuminator 40% less likely to take damage.
Also illuminators can take on a fleet of the vasari's generally stronger unit the skirmisher with no problem and is even a match for a fleet of the tecs generally stronger unit the kodiak.
This forces opponents fleets to diversify their fleet and add in support ships just to battle with an illum fleet and survive, while the illuminators can stand on their own, or with the help of only 1 other kind of ship (defense vessels or drones hosts), adding in support caps and heavy cruisers only serves as overkill. And I mean sure you can beat an illuminator spam, and even a battle ball, but it isn't easy, even against players with poorer skill than your own.