Not sure what "feel" it is that you are losing with Di2 or any electronic shifter. It's not really so much that they shift better if at all. It's that they don't require as much ongoing maintenance as do cable pulled components.
With my cable pulled Shimano 105 I didn't need to feel anything. I just moved the lever or paddle and the DR shifted up or down. It's not like I started to shift and then paused for the exact moment when all the cogs and planets were in perfect alignment.
We'll continue to see electronic shifting go to lower and lower tier bikes. But likely not before these threads bemoaning the loss of cables take up a significant amount of terabytes in the servers.
I really don't care which I have on my bike but I'll lean towards electronic shifting since I've now experienced it. My 105 5800 shifted every bit as good or better than my Ultegra 8050 group. My Ultegra 8050 has needed no adjustment since new over 2 years ago.