Topic: Software emulation features possible with FPGA?

I really love FPGAs for their baremetal nature, but I do wonder whether it would be possible in theory to implement some of these useful software emulation features:

- Black Frame Insertion (BFI) for reducing motion blur: … _insertion

- Quick Frame Transport (QFT) for latency reduction:

- Run-Ahead for latency reduction: … -consoles/

- Overclocking without speeding up the video and audio: … rclocking/ (people in the comment section there even started discussing whether it is possible with FPGAs)

- more advanced CRT/LCD filters, for instance: (a filter for DOS, and there actually is an open-source FPGA DOS core, so this could be useful)

And what features of software emulators do you miss the most?