Frame respacing pushes the crank Q factor out also... assuming you want to keep the chainrings and cassette centered. I doubt most people would notice 5mm (2.5mm on each side) though.

IMO 135mm is long overdue. 11 speed on 130 (or 131mm) really compromises wheel strength. And I really don't see the point of 11 gears either. I ride S9 (with C11 shifters) and though I live in a mountainous area, I don't feel that I suffer from a lack of gears.