As there are trees, your airport controller is working, so don’t worry any further 🙂
The light poles were removed when you deleted the LDSP as part of the instructions, this is because the old ground lights showed up too bright in v4, bring it back and see for yourself. I don’t at the moment have a fix for this.
A fix is coming to remove the default tower in the next update 🙂
I don’t plan to convert the other two included helicopter/seaplane bases included with Split I’m afraid.
I’m unsure about the object’s wrong altitude. Editing and redistributing a patch for that will be out of the scope of our agreement with Aerosoft so unfortunately, I can’t do anything to fix that.