By adding the IR linking used in GBC it would add some game features.
This has been done on other emulators and should be added to make a great emylator more perfect.
IR Linking never really worked with anything on the GBC itself. and exactly which emulators use IR Linking, because i've never seen any.
Hmm, maybe its the problematic IR linking device in TGB Dual. It could be usefull if could be simpler and somewhat working atleast.
At the very least it is worth looking into the code for the Cable link as i think it is almost stable, as for ir support.... could be done but it needs some time.
Hope its of any use.
Heres some links to it.
Plugin set including IR Linking Device