I'm working on station building in LEO, which I've enjoyed so far. I've also been brushing up on my moon trips with the CTV Pegase capsule. XR2 is cool to fly, but I like the "realistic" ships as well and I'm trying to get more comfortable with them.
In the past couple of days, I flew an ATV2 to moon orbit with Ariane 5 lunar, then with another Ariane 5 lunar I flew the CTV to the moon and rendezvoused with the ATV2. This was the 1st time I had done that anywhere other than LEO. LunartransferMFD was very accurate. I learned a lot on this mission about conserving fuel for a trip. Fuel conservation with "realistic" vessels is what I've been trying to perfect lately.
I've also been trying to discover the best launch windows etc, for low energy missions to conserve fuel. I know most people poke around with LaunchMFD, TransX & IMFD to find the best launch windows, but I'm still struggling with this. I can find any ol' launch window, but I don't know if it is the "best" one.
I think next I'm going to take a look at the Antares craft. Looks very interesting. Also I am inspired to try a personal "realtime" moon mission as well once I feel better about my mission planning accuracy.
So lately, these are my personal milestones. That's why I love Orbiter. Very rewarding and involving.