Bukkit

(Quote Raidendex:)
"Every new block added to the queue will update respawn times of all other blocks in queue from the same region."
Example: (Quote Azpet)
"I'm attacking a castle and breaking the walls etc. But I don't want the walls te regen when I'm still attacking. After the attack (when no more blocks are being edited and a timer has gone by) the castle would need to regen so it's ready for a next attack."

P.S. Maybe make it so you can chance between what you have now and this.