With another month of nearly flawless behaviour, I am going to have to say that SolarDock is done.
Sure there is some weirdness when turning on and off where some postcaps don't "hear" the NRF and so don't turn on or off in response to the broadcast message. This appears to be fairly random and clears up on it's own without any intervention from me.
Last weekend, we sat out on the dock for a couple of hours one evening with all of the lights on, and it worked without issue, the only effect was that it took a little longer to reach full charge the following day.
So as the title reads... I think it's done!