Congratulations! Nice work by @INeedMoreLumens 
Doing the T1616 upgrade is my next challenge. I have an FW3A waiting and received some T1616s this week. Iām just waiting for some adapter boards to arrive from OSHPark.
Anduril 2 can be installed on the old T85 MCU, even with a single AUX channel, but a whole lot of features have to be deactivated for it to fit - see here. The T1616 mod allows 3-channel (e.g. RGB) AUX and has enough space for a fully-featured Anduril 2 build.