Clan Arena

Just a thought. Who thinks it would be a good idea to have an "arena" for clan mates to practice on each other?
Way it could work is: a clan member would submit a request to another member to battle/practice in the arena.
When request is accepted they both get 1 attack on each others base to battle/practice base design or troop configurations.
There would be no loot bonus involved or trophy gain/loss. But it would cost the price of the troops you use in the battle.
Heros would need to regenerate also.
Could even cost gold to do the battle.