MiFi support down the road will be unlikely to solve the issue since without bundled controllers, the market size for games that require them won’t be big enough to justify making them & vice versa… unless each studio does something like Guitar Hero & releases their own peripheral & bundles it together with their game…
I can imagine lots of game genres that could work fine but they’ll only be economically viable if the market for VisionOS games itself is big enough to support such a business model or if Apple jump-starts things by investing heavily in individual titles. Their messaging to date hasn’t really suggested that they’re interested in playing that game though.
We’ll see, though.