What England got going for them, which makes them less of a target, is that the same problems also works in reverse, that no AI can mount a competent attack the other way around, in this case Denmark suffers from 1. the strait crossing between Sjælland and Skåne, making so Sweden can just walk over due to Naval AI not defending, and 2. Hansa being more than willing to jump Denmark annexing loads of land from them, given half a chance, while Denmark can't preempticly declare war since Austria would be all over them for daring to attack a member.
In my latest game (anadoctial again), Sweden pretty much started off grabbing Independence+Skåne, Halland, Blekinge, and Bornholm, while Hansa jumped the corspe just after the independence war finished (and PU with Norway was annulled by ruler death), annexing all but Gotland, which Denmark then sat on being able to do absolutely nothing for the next 40some years, until Sweden felt like grabbing that as well