Remember that a split card on the stack only has the characteristics of whichever half is currently on the stack
Standard is our only rotating format, and while keeping it fresh is important, we also feel that there's a more effective middle ground. In my opinion, this also makes new cards a bit less impactful (at least for those playing the killer decks): as shown by non-rotating formats like Modern, Pioneer, and Explorer, the bigger the card pool, the less impactful new cards tend to be
I think that held for long enough, just about any Pokemon card will go up in value
I have tested too many matches against very good opponents to believe that it will take down the Mythic Championship
Another issue with white is that its most impactful plays tend to be stax pieces like Drannith Magistrate and mass land destruction like Armageddon, which many casual pods soft-ban during their Rule 0 conversations