This must affect the membership scheme's at the club. As pointed out earlier in the thread, why would people in Coventry want to fund a Birmingham Cricket team. The club should be offering a separate Birmingham and Warwickshire membership.
I am originally from Sussex and support them, but if the one day side turned into Brighton I would not support them as I have no affinity to the town. Just seems like County Clubs finding another way to alienate their core membership.