For me, the option of moving entirely should be the fair choice... Not even requiring the need to buy BEE. Just disappear on one side... and appear on the other. Done.
I given the example that if this has some cost for @aggroed, associated with the work needed for that to happen, then ask for delegation in HIVE binded for a lease time to pay for these services. If the delegation is broken, then cease the services for that token. Simple contract. Win-win!