Need a specific mod

[The Mad Asshatter]

Here's my issue: I want to play sh3 on high realism, so I would like to get rid of the real-time visual ship position updates because it makes plotting way too easy. This could easily be achieved by turning off god's eye mode, I know, but I want to keep the sonar contact lines of bearing and radio update icons. Now if there is a mod that will remove the realtime updated icons, then awesome, but somehow I doubt that there's a mod that does this without modding other things I don't want modded.

So if there's no mod, how can I do this myself? I was thinking that it would be simple enough to just remove the icons for ships, but I was wondering if that the radio update icons use the same ones as the realtime ones, because that would suck to be missing radio reports. Also, how easy would it be to modify the defficulty setting definitions so that sonar contact lines of bearing weren't taken off the map when god's eye view is disabled?