I don't have many atty to compare too but yea it's super airy especially with all the afc remove. I can hardly imagine anything that has more airflow.
I'm currently using mine with a silicone anti-slip ring around the side airflow so it's top airflow only with the inner AFC remove.
I'm having a case of shinnytis now, I don't need a new drip tip but arrrg, I think I like the new one better from the pictures.
As for metal wide bore drip tip on their website they mention that 12mm tips [MX size] tips fits, I think they mean Mutation V2,V3 drip tips. On my caliper the wide bore drip tip has 11.9 mm at the connector. Also I think Atlantis V2 drip tip also fit. From what I read that the Atlantis V2 can use the Mutation V2-3 drip tips so that might be an other source. (Disclaimer I haven't tried now own those other drip tips it might not fit I don't know)