I heard that the weight difference isn't big,
but with actual measurement of 469 grams, the difference with the Force d1 is only 8 grams.
The wired Blip Port has 1 Force per lever and 2 for Red, so Red appears to have slightly more expandability for adding separate switches, but aside from that, the performance and functions are completely identical, so except for the text on the lever, there's no sense of upgrade.
When using mechanical before, even older models had a clear difference in the premium feel and tactile sensation that flagships provided, but switching to button clicking, I can't feel that kind of difference.
At least for electronic shifters, skipping a generation seems to be the absolute requirement for an upgrade.
