Didn't read all you wrote but he is way way too easy to counter, 1 masked man, or a wind main with blinds and remove buffs and that's it.

With these control heavy teams with Shisui, Masked Man, Itachi being so often used I don't see why you should pull for any Ay and end up using him only in ranked battle?

Now I wish I didn't pull for him and put those scrolls in GNW Treasure instead, also the scroll from Sage Naruto Treasure and Kage (I don't use anything form there in my main team now).

For GNW Treasure the real ninjas that are worth anything are Madara and then Naruto Kurama, so don't really care about the rest. Sure you can make Kushimaru team or get Jinpachi to help your Deidara but that's about it!!! And those teams get destroyed by the Super Rare teams with some other premium ninjas that you can only buy, like Minato, Shisui etc...