Dont know how you other spiders think the current burrow is fine? :?
It's broken and needs fixed - going in combat burrow needs to cure all bleeds/wounds so that they don't pull you out of the burrow again. Burgs hip and clear off without damage impeding them, champs/cappys go into run away mode and damage dosent seem to impede that. So let's make the quick-burrow do what it was designed to do. No use hitting it to come out of a burrow a second later due to a wound/bleed and then have a CD activated :<
I like your idea original poster - has my vote.
Keep your joints oiled freeps - for if you dont: Rigormortis has incapacitated you!!