Hey,
It is a bit difficult to implement custom version of SVirtualJoystick in binary build. Original one has weird scaling and positioning which does not play nicely with umg widgets.
Please, give us easy way how to edit and customize behaviour of SVirtualJoystick, maybe you can even expose them to UMG, that would be perfect!
I agree with this.
Atleast remove private from important functions, so we can easily copy tick function into own subclass and extend it 
Everytime I think I found workaround it is private function or global static function. Aaahh, please give us atleast way to specify anchor, scaling, positioing, so we can make it work with UMG widgets.