I'm sorry, I didn't even think about shortening the combat turns! To linear of thinking on my part.
Based on my first battles, 5 tuns may work the best. That would give you a 'beach head' with only infantry. You wouldn't have many but you'd have some left. Then your follow up transport could land their units.
AT, I don't know if you got my last email but I found three more problems in STM 1952. They may have been addressed already.
1. Artificial Intelligence Mounts: There are none. They don't show up on the mounts list.
2. Gravitic Sensors: The satellite mounts only reduce the size to 200kt.
3. Hyper-Tachyon Sensors: The satellite mounts only reduce the size to 400kt.
Great job on the mod!