Hi,
The beginning of a moon phase JLC watches collection? no ! only these JLC, and that's all ! and rare are the watches with moonphases and 8days of power reserve, so I'm completely satisfied with my GSM. Winding the MC everyday is not a torture but it's too frequent for me and I don't have a watch winder 
Do you have the same moon phase precision with your Grande Reverso and your Master? I didn't measure the MC but I check the GSM at JLC Paris Boutique and the chrono-comparer displayed +7s, which is very acceptable for me.
So, finish with the moonphases, I want now some new complications or models (Ultrathin, Atmos...)
Bye !