I saw the update this morning. I must admit that Dratini is a PITA to train, its not strong yet, and it has the Slow Growth rate. However, the legendary birds also have a Slow growth rate ((Although they start at a higher level)).
Bird Jesus might kind of suck, but doesn't Collosus suck too? At least one of them should be switched out for Zapdos IMO.
Why Zapdos and not Articuno? Simple. Ice is only good against Dragons, Flying, Grass and Ground, which are no thread or are already covered by your team
Electric is good against Water, Flying, to which you have less coverage. And Zapdos learns better coverage moves IMO