That’s a slightly more interesting idea, having a war blockade unit, or something like that which could actually force a fight, as many of the highsec dec corps don’t get out of station dock range, or use neutral logi.
If the dec’ed corp can go kill theirs the war ends, or if they can’t come kill yours the war ends. If they defend theirs they can keep the are going, and if they come kill yours they get a free extra week.
The question there is where are people allowed to anchor these? If a highsec wardec corp goes after a null alliance should the null alliance be able to anchor their thingy out in their home null system? What if it’s a WH corp, can they thingy up in their WH? or do you force them to put it somewhere in empire? And on the attacker side, where do they put theirs? For Pirat I’d think Amarr or at least near to Amarr, but what if they want to put it somewhere where it’s a pain in the arse to get to?
I was replying to the structure in space idea. If you never anchor any structures you would be effectively wardec immune. And if you ever need a structure you can easily use an alt corp to put it in space.
having a set number of slots is something I don’t really like either. Like you say you could just dec yourself and be immune. Could probably also figure out some shenanigans with alliance hopping to circumvent many of the restrictions. Declare a cheap war on some new corp and instantly join an alliance to transfer it, or the old dec shield where you get dec’d then join an allance, leave and the war ends for you.
On second thought, maybe wars are silly and we should just get rid of them. I never remember liking being on either side of a war. Idle had a bunch going each way. All the docking up was more boring than the 0.0 blue doughnut.