I got an answer:
Hi Whilst I understand the appeal of RGB like in the Proteus Spectrum G502. When making a revision does Logitech consider weight saving, button replacement, switch enhancements because there were none with the G502 Spectrum? Thank You
We always consider improvements and are constantly innovating on product deign, but we are very careful to not change products people love in a significant way. The G502 is one of (if not the most) popular gaming mice available today and we wanted to provide the same great product with a little bling for the same price.
Now which of you lot love heavy mice and a awkward sniper button placement?