The OnePlus Nord is one of OnePlus' strongest launches ever, just because it offers so much for such a low price. Like the OnePlus 7 Pro launch last year, the Nord is one of those phones that is just so miles ahead of its Android competition, it will probably compare favorably to mid-range phones...
A 90Hz display, at this price range, is an absolutely killer feature; A flat, distortion-free display, just like every content, app, and website creator intended; A modern, slim bezel design that is indistinguishable from a flagship smartphone.
OnePlus doesn't do monthly security updates. It'll be more like every other month; No always-on display; Facebook crapware; Shipping six mediocre cameras instead of two good cameras.