Just nerfing the wardec system isnt fair to the people who have chosen this life as their main activity in EVE online.
Wardecs on corps with structures is fine.
I think we should set a corp tax to any Player owned corp that doesnt have structures.
That, or make the cost of making a player owned corp, much more expensive. Make it a monthly cost to operate a corp, even. Once you put down a structure, you no longer have to pay.
Player owned corps should not be tax-havens, without putting some skin in the game.