I think I’d prefer the wedge but only because I’ve owned an 11” Air since 2011. I upgraded to the 2020 13” Intel MBP last September and find it so much heavier than the Air. I also missed the wedge shape, felt really comfortable.
That said, I take the point above about doing away with the wedge helping to improve the battery life. If I had a choice between the two, I’d definitely take battery life over the wedge.
Count me in the camp that’d welcome an 11” or 12” model though. I think for day to day use, the 11” MBA size was great for my use case. I don’t expect we’ll see one anytime soon again though.