Great work Ice! New Units and Island are very well implemented.
Check my BRDM2IMP police units for a police light/siren solution. The script I use sets objecttexture and light brightness in a loop. The trick is that the objecttexture is switched between a "normal" and "bright" texture to simulate flashing on/off. You'd have to edit those models to add the selection for the light bezels to make it look right in daytime. If you can't then I'm sure you could still use my script with a bit of tweaking. Script waits for the light switch to animate "on", again you'd have to tweak that condition in the script or add the animated switch to the model.
Also agree with the comment about the arabic signs... distracting but certainly not a big problem! I suspect these are from OA. I wonder if these building textures can be switched via hiddenselections?