I really think you're grasping at straws, Paul. "Every inch will need to be scrutinized!" Oh poor you. You lament as if someone will force you, or people like you, at the point of a knife to scour every inch of ground for a stray religious landmark. Even if it did need to be done, it'd be done by people who share philosophy with ACLU, and surely you can't object to them engaging in busywork like that. Hey, less time for them to infrindge on your sacred right to infringe on everyone else's right to freedom of religion.
That is assuming they'd even do anything of the sort rather than just act on someone's complaint.