I'm all for it. As some pointed out before, it's more often than not your connection that screws you over with cleric's, not 'not being careful enough'. But yeah, it's always your own fault, never something technology related, right? Must be great to have such a stable connection at all times, I most definitely don't have it. Especially not when I'm on my alt on Balmung since, you know, transatlantic internet connection and all.
Besides, a 0.5 sec cd on Cleric's won't hurt anyone, and it won't cheese anything. The 5 second cd after activating it can stay, but please include that 0.5 sec dc after turning it off.