I'd be perfectly happy with you just deleting super capitals and reimbursing people the SP and a bit of isk and given your approach on the blackout I'm sure you guys aren't that averse to pissing off big chunks of the player base who are used to their toys but that's an extreme.
The more sensible approach is pretty much along the lines of what u/TwilightWinterEVE said below, the only changes I'd make there are Faxes straight up should not be able to rep sub caps at all, it's infuriating coming across a relatively equal force and having a good fight out of it and then suddenly cyno up fax hops in and they're invincible and the funs over.
HAW guns are awful for a similar reason, things which could turn out to be solid sub cap brawls basically end when the other group drop in a handful of HAW dreads to pick your subcaps apart and then drop a couple of active faxes that make it incredibly hard to break the other sides tanks no matter how smart you are playing without just warping off.
AOE Doomsdays are shit, I mean as someone who has definitely abused them, bosoning wormholes and gates, it's just a massive cock block to content, although a BFG can be used as a perfectly valid defense against a poorly placed dread bomb on a titan, so maybe on this front make it so that its based on sig so that it barely tickles subcaps and still works well on dreads, or make it so it simply doesn't work against subcaps.
I agree with Twilight on the Rorq should be an on-grid booster, it should keep panic though and it should also keep the rorqual alive so that subcap responses have time to actually respond this paired with some sort of change to caps should be more viable.
I don't particularly agree with the cutting EHP on the supercapitals either, if they are to be a thing in the first place and their only real application would be towards other capitals there's no need to make it any easier to delete them, as they still are expensive and are large investments to the individual pilot, it's not particularly fair or balanced if you make them easier to nuke with subcaps especially if they lose their ability to engage subcaps, I'd suggest rolling back on the insurance payout cut at least on dreads to encourage bigger dread bombs on stuff like titans and supers.
I still disagree on the keeping blackout part, it was as much a "tool" to trick people into forming or whatever as it was to be "perfect" intel and has gotten more people to turtle up than before meaning less diversity in targets and content than before. Fixing capital responses to subcap fleets balance should work to fix most of the issues people think the blackout is solving and also makes the krabber and the casual/semi-casual player feel like taking part which means more people to interact with the blackout definitely reads and feels like a buff to ganking with no intention of fighting.