Theif stealth needs to be more inline with Mesmer Invisibility uptime.
Its not permanent. Its repeatedly refreshed by attacking every few seconds.
You can also use ae to hit them just fine. Either they attack and eat the AE, or they lose stealth.
Yeah maybe if it’s 1V1 Drac, problem is now you don’t see them coming because of perma stealth and 2 thief’s can instantly down you in stealth buy popping elite, no joke insta down before you even see the whirls go off.
Zerg>Skill.