Apple

I for one wouldn't mind seeing Apple adding a secondary dedicated wireless chip, to be used with HomePods (if they're in home theatre mode), instead of relying on the user's WiFi. If anyone, Apple has the means to do so, and it would reduce the issues many are having with e.g. channel hopping.

Beyond that, it would be interesting if Apple also introduced a more gaming focused TV box. tvOS is already an essentially somewhat stripped down iOS, so putting the appropriate hardware under it could make it into a good entry option for even more taxing games. Imagine an M3 Pro powered beast with 16GB RAM, M.2 expandable storage for larger games, and unlike Macs, they'd have absolute control over the market. Apple's hardware already goes head to head with top of the mid-range dedicated gaming hardware, at fraction of the power consumption, so once they get serious about gaming, I could see such a device clawing some of the market share away from Sony and Microsoft.