Had looked awhile myself, but nothing out there. Would like to have a quicker access to garage door opener or sunscreen or even sunglasses than the stock compartments as they are somewhat of a biotch to get into. Even thought of doing something custom with the OE compartments to make easier access sitting or riding. As far as long arm need, the radio is already there, not hard to reach as it isn't like it is at the leading edge of the front tire.
Funny thing hearing how far forward our w/s's are, got side shots of my previous rides and the difference at the top edge is maybe a few inches from RK, add on DCC Batwing(sits same as a EG), more sweep to RGU.