First of all, I really enjoyed building and playing ADV NUPL.
I think the metagame is p good atm (although some people would argue that BP chains should be nerfed in some way)
I mostly agree with Eartworm comments.
I think that Roselia should drop to A+ and that Metang should be S tier together...
The first thing I thought was Reflect Roost Zapdos.
Reflect Roost Zapdos would become a monster, only stopped by a freeze, by a Rest Ground or by a Rock Slide crit (honestly in a meta with Roost and Zapdos, the only viable Golem/Rhydon sets would have Rest). It would probably be Uber.