My serious hope (that might be hinted at by the 10% increase in charging brick wattage) is to see ProMotion. It's already in the iPad PRO, it's rumored to reach the successor of the iPhone 11 PRO, so put it into the most pro of the MacBook PRO's and it could be considered a pro feature, which I'd say it actually is. I've thought about it, and I have no clue where that extra power would be going besides a more robust display controller to handle twice as many frames. (The rumored 5500m GPU pulls the same amount of power as the Vega 20 so it likely isn't that, and the fact that the brick isn't just 100w makes me think it isn't just for generally faster charging.)