As my favorite addons are broken in Orbiter 2016 (Themis LV, the CSSC, UCGO...), i have a lot of fun with the Deepstar 3.1 addon. I'm planning a good Mars mission, but first i have to (re) learn a lot of things in Orbiter. I love to make custom missions too, tweaking the .scn and .cfg files as to make direct missions with real rockets (Ariane 5 or 6, Kulch's Energya, Falcon 9...) to planets with the wonderful Chapman Probes addon under the fairings. I'd like to make missions with the great Igel's addons, but i still have some difficulty to understand how to make custom missions. But it will work !