Those poly counts from the Dev team do not seem reasonable to me - If a Battleship can have 35000, then shouldn't a freighter work with the same amount. They probably had different reasons fot those limits. I would prefer more detailed models, as long as they don't slow down my computer (the models in SH2 were not really detailed enough). Of course, I might not know what I'm talking about at all...
There were a couple of models from SH2, that I did like a little, such as the Troop Transport, Slow Cargo, and Oil Tanker. Can these be imported with Sansal's tool? Also, some of the others could have more details added and then be imported.