I guess we have the same opinion, I reckon on the 5th gen there are more tells BUT thankfully they are fixable (crown, hv and AR).
Also dial is fixable but as you said it would be too costy and at that price point a 2nd-hand gen would make much more sense.
I just disagree about AR: i had a 4th gen for some months and AR on mine was almost non existent, it was just an annoying blue hue.