Momma always told me not to reply to balance threads, but here I am again :/
Astax, that's pretty funny. Some fellow whiners on the subject of Repulsion include HuntingX, JinxofSin, Drexion, and Cykur @ https://forums.sinsofasolarempire.com/308320/. You know those guys, right?

I take your points - Subverters and Guardians are neat counters to each other and Repulsion works against full RA where nothing else will. The issue is that
Repulsion, unlike Distortion Field, has no warm up, no cool down, doesn't require facing the target, and has no Antimatter cost.
The ability can be countered, even as TEC. I've used teched Cobalts and teched Kodiaks to some effect against it. I've used Subverters against it, too. What concerns me is that it is a very powerful ability with no consequences, something you don't see all that often in balanced games. I don't think it would ruin Advent to give the ability an AM cost.
(occurred to me on more than one occasion that repuslion could be a plot by the devs to force us to actually learn to use strikecraft

)
IIRC I think Guardian repulsion works against any enemy target within the sphere of influence relative to movement of either the Guardian or the target, and not related to movement toward or away from the Guardian. So a Guardian plowing into a stack of unmoving LRMs or repulsing ships moving laterally across its ability horizon will scatter them just as effectively as it does ships moving at top speed toward the Guardian.
Since this will probably be my last "whiny" reply on a balance thread: Devs, you guys are great. You've done a good job of bringing each faction something unique, which is stupid hard in reference to balance. I'm not an advocate of dragging each faction down to equal but dull mediocrity, and the game isn't broken. What would be beautiful in the long run:
-Viable strikecraft in multiplay
-Buffed TEC support (actually, I'm looking at support cruisers for each race that just aren't used in multiplay, but those Hoshinkos need some help against Subverters and Guardians first)
-Give TEC and Advent endgame ultimates that can match strong Vasari RA.
Thanks