Since Z-M has announced an F-4E, and assuming they release a slatted version with TISEO, how about an ARN-101 conversion (spine antenna fairing, new rear instrument panel, new WSO's right console with keypad)?
Also, all of their F-4s need some cockpit sidewall detail. Perhaps drop-in parts to work with the kit cockpit, since it is already very good.
I'll see what else I can come up with while I'm sitting on my backside, waiting for my meeting to start.
Thanks,
Ben