I could not resist picking up a BFight 210 BNF when the price was down to $99. Happy to report I got an AutoTune in my kitchen on it.
Partial teardown and rebuild consisted of using 18mm M3 screws for the electronics stack with 5mm aluminum threaded standoffs on the top side to compress the arms. 4-in-1 ESC on top of that with 2mm nylon nuts to hold it down. VTX on top of that with RMRC 5x5mm M3 Bobbins between it and the OmnibusF3 FC all the way on top. This makes for a stronger metal on metal clampdown on the arms and shorter stack than the way it shipped. And the FC is now soft mounted.
Other changes from stock are the camera replaced with RunCam Micro Sparrow and the shipped FrSky D8 clone replaced with a FrSky XSR-M stuck under the camera with the antenna zip tied to the front arms.
Added a Matek 8 WS2812B RGB 5050 LED on the back and a Realacc Carbon Fiber Battery Protection Board. Swapped in the provided MMCX to RP-SMA pigtail mounted to the top plate with an AOMWAY 5.8G 3dBi RP-SMA Male Four Lobe RHCP Antenna topping it it off.
560g AUW with an Infinity 4S 14.8V 1500mAh 70C Graphene LiPo and a Foxeer Legend 3