Mate, really, do you have any experience in arena? Esp in TBC vs most popular setups rogue+mage/rogue+spriest/rogue+lock?
It’s another strong self defence cooldown with perspective to break distance with rogue. It is not ultimate weapon or something. But, you the one who listed very strong cooldowns. And arena is place where you must count all your cooldowns and use them wisely. You said it by yourself, stone form == force rogue to use clock or vanish (CS ofcourse). I will take it over wotf at any time.