I wrote about actions in Epic: https://thenerdstreamera.blogspot.com/2020/01/musings-about-epic-action-stations.html
[Blog] Musings about Epic: Action stations!
Interesting. NONE of my opponents so far have done anything with jamming. Neither have I. I mean, I've generally recognized how good it *should* be, but I seem always to run out of points, haha. And most of my opponents have not gone for corvettes, for some reason. I LOVE that Ion Cannon Battery, but I think you're correct that Targeting Battery is perhaps too good to be left out, should anybody ever figure out how good jamming really is. Now if only Scum had a corvette that could equip more than one Hardpoint....
For my own (very limited) meta at the moment I see this is a huge problem, actually. It restricts list building a lot. You need the Targetting Battery for reliable mods. This leaves one Hardpoint. The Turbolasers still suck, so that leaves the Ion Cannon. However, if I put that on, I have no defense at all against fighters coming in close, so unless you want to be at the mercy of your own wings, the only thing you have going for yourself is the combo of Targetting Battery and Point Defense Cannon. That costs a lot of Energy, which in turn means you need Liberator on the CR90 (the other titles are kinda bad), you need Tibanna Gas Reserves and you need to be very careful with your energy spending.
Yes, you could also build the Raider and especially the CR90 into supporters (Dodonna's Pride, for example), but I just can't justify the point investment there.