If Godox built a decent professional shoe flash, with all the features of the X1 transmitter, then there would no need to mount flashes in the hot shoe of the X1 or mount transmitters in make shift side mounts. There is also the issue of multiple TTL devices when using Canon camera's. If you use the X1 in a TTL off shoe cord then your flash in the cameras hot shoe is going to have to be in manual mode unless you tape the TTL pins of the X1. This just seems like a lot to do for no more than you gain. I hate work arounds and this easily solvable if Godox would get off their cheap burro's and build a shoe flash with the features and functions that compliments their new 2.4G wireless system.
Send emails to godox@godox.com and demand a professional shoe flash that we can use "on camera", that utilizes all the features of the 2.4G wireless system, rather than this mickey mouse, ancient 580EX technology crap they're giving us now with the TT685 and soon to be released v860II. And while their at it they could put a decent swivel head on the thing rather than these gritty friction devices that all the cheap flashes are using now. Make the head to tilt rearward rather than forward so that when you are bouncing flash "on camera" you don't have to swivel the head all the way around forward just to switch from one side to the other. While there at it make it weather sealed and a screen that displays 5 Groups with a dedicated button to select each Group individually.