I'm curious if Single-photon avalanche diode (SPAD) arrays could replace more traditional image intensifiers.

Would be intrigued if they could be more sensitive to light, as you wouldn't need a phosphor screen to translate electrons to photons.

I've not managed to get this paper yet - https://ieeexplore.ieee.org/document/9895178/ but it sounds like it might be possible to make SPAD arrays to capture longer IR wavelengths for thermal imagery.

I can think of some downsides of a SPAD though, as you'd need a display too, which would decrease the frame rate.