I have a Lisa/L board and was planning to adapt the X650 for it. I was initially thinking I would need to at least replace the ESCs with I2C controllers but I was wondering if the Lisa/L (code) supports driving ESC controllers.
I understand one of the problems with ESC is it is too slow but XAircraft seems to have come up with something new that provides 500Hz control. Here is a link to an article on the UltraPWM protocol and the reason they stayed away from I2C:
http://www.xaircraft.com/wiki/UltraPWM/en