I’ve never had an issue with the 763 ... 2-3-2 in Y/C+ is a fantastic configuration, and have no complaints about the D1 seats
I can’t opine about the 717, having only flown on one (AA, ~2004), but
will certainly not miss the CR2s ... and that said, I know I have to be one of the only turboprop (SF-340, EMB-120) fans left here