When flying even a modest GA aircraft VFR, there isn't much time to react if you've been looking down at foreflight/instruments for 30 seconds while heading straight towards a paramotor which has no ADS-B out. This says even more for IFR craft that move much faster.
Technically? Yeah, someone could probably make a small device that incorporates all the necessary gadgets (would need to read the FARs) and then broadcast a signal.
Honestly, even if someone just scraped together GPS and a transmitter with a color changing LED (eg: red=fault, green=transmitting) and then worked with the FAA to set aside a squawk code for these devices, they would improve safety for everyone in the sky while also creating a product that would likely become a standard for several decades, if not more.
When flying even a modest GA aircraft VFR, there isn't much time to react if you've been looking down at foreflight/instruments for 30 seconds while heading straight towards a paramotor which has no ADS-B out. This says even more for IFR craft that move much faster.