Just for clarification, the CAP 4 project was well underway before even Garchomp dropped. Hence,
Garchomp and Black Kyurem will not be allowed in this test. Genesect will be allowed in this test.
So if we talk about Garchomp or Black Kyurem, it would have to be in the context of the CAP metagame, which will be closed during the playtest. After the playtest, though, you can discuss Aurumoth in the CAP metagame in this thread
or this thread
or maybe ANOTHER thread will be made, idk...