I do like the trends of 2019 that you have going. Maybe it would or could make sense if it was part of the entire icon base. Right now we have legacy icons mixed with 2.8 icons, and there is no unified design.
Your soft gradients, strong form, arcs and iconology could work. There are hundreds of icons You could play with. If the designs are great, effective (form, silluette, colour, etc) and check all the boxes, then maybe it could be the next big thing…but you gotta prototype the entire UI System and iterate with us – and have fun, the playground is huge, 400+ icons. Then and only then would a re-branding make sense.
Well, High DPI is the future anyways, so we should finally overcome such legacy restrictions. Despite the gradients (which are not too important) I highly welcome a simplyfication and unification of the icon’s current design. I also strongly welcome color coded icons, because they help to create a more streamlined and logical workflow.