I’ve recently changed from a 26″, 3×9, straight steeerer, 2008 S-Works Enduro to a 2016, 650b, tapered steerer, 1×11 Capra.
The geometry is nicer, but that could be the case when you change any bike. I don’t notice any difference with the wheel size and the 35mm Lyriks don’t feel any stiffer than the old 36mm X-Fusion Vengeance.
I steadfastly refused to lose 3x gearing previously, as I used the full range – I’ve now adopted 1x and for the most, I like it. I did fit a 9-44t cassette though for my weedy legs. Pro’s – less bar clutter, less gear selection to think about, no dogy fron shifting, not dropped a chain (which I did quite often with a 3x). Con’s – lost the top end gearing (low end is almost the same) and the chainline is gash – pedal backwards in 1st gear and the chain throws itself down the cassette