Better lever feedback than di2 - I don't understand why anybody wants lever feedback with an electronic system. I want as little lever throw as possible aka none.
You're confusing feedback with throw.
Throw is the distance the lever travels to actuate a shift.
Feedback is the tactile feel of the shifting process.
When Campagnolo was reducing the feedback of their 10spd stuff, many pros said they wanted more. The reasoning was that once they were really spent or really red-lined, they wanted shifting to be very distinct to reduce to chance of shifting error when dumping their cassette. To address this Campagnolo introduced the RED version of their Record 10spd and made it available to pro riders.
When they introduced 11spd it had a much softer feel and there were complaints from all types of riders. Again, Campagnolo addressed this by increasing the feedback in the levers.
It would only make sense to do it again with electronic as opposed to introducing 2 new groups and then having to modify it as they've already had to do with the last two versions of their new groups.
IMHO, I agree with them. I want to feel the shift in the lever. I like the clear, distinct click for each gear. It doesn't matter so much when you have to click one gear at a time but if I am dumping my cassette I want to know I dumped 5 and not 6.
This does not apply to those groups where you have to go clickety, clickety, clickety, clickety, clickety, click to dump 6 cogs...