Lsh is very easy. Take the Extended Challenge (EC) mod to it.
The way to change the AI. Sensors.dat with S3D is very difficult. Because the balancing of all Ships....
The EC reduces the visibility of the crew in LSH (16 to 10km) and therefore also react the destroyer decent.
Would you like LSH 16 km visibility and difficult then here:
http://www.mediafire.com/download/ow...I_Radar_1.3.7z
Sorry for my bad English.
Greetings.