Flagships being off level is definitely more of an issue to deal with.
And I understand you can't always run away from your assets.
But squishies in OGHS WS required nearly all to be on field. That's not true anymore for DN. Before our WS players burnt out, I was in the middle of drastically changing our entire play style. Using minimal ships everywhere except on offense.
Which means we could absolutely retreat and screw the squishies.
However, to the first point you made, I haven't gone against floating shield. But I have used this exploit (mainly for supply line defense, which means I could use one flagship for that and put the rest of my corps resource to planet defense or offense)
And the use of recoil takes a helluva long time. So knowing mid recoil that a shield and cataclysm is on its way, means you should be able to make a decision on wether you can afford to stand your ground and try to snipe the FS. Or retreat.
But you are right in that if I haven't gone against it personally myself. I could be potentially off base.
But I argue that I'd only be off base on defense against the mods, not the timing. Because the timing is pretty straight forward.
3-4 hour gate travel,
6 hour recoil,
Mod usage
6hour recoil,
3-4 hour gate travel,
3-4 hour gate travel,
6 hour recoil
Mod usage.
So the first usage can be dropped in 9 hours.
but the second and repeated refreshes after the first usage is 18+ hours.