I can`t use english well.... but I suggest something. About capacity of FuelTanks. Formerly you tell that reason of low capacity of fueltanks is it is designed for aircrafts, but I think OPT`s parts are good for spacecrafts TOO. I want you consider about to raise capacity of fueltanks. Heavy weight of fueltanks with high capacity can be solved in player`s discrtion. (We can adjust loadage of fueltanks in SPH or VAB) If you accept this suggestion, OPT will get more possibility And...... wil you add J inline docking port again?