I feel like a pretty big majority of golfers would have more fun moving up a box. I hit my 5i about 165 and am currently a 22.1 trending down, and generally look to play around 6000 yards, but I agree that slope is an even better indicator. My brother hits his about 190 and doesn't keep an index, but is probably a 10-12 or so and also plays the whites with me. Our dad also plays whites, though now he will pick some holes to play up if there's a decent forced carry, he's always been a low ball hitter, but just doesn't have the power anymore.
So many players just default to "next up from tips" even though they would have a significantly better time playing further up. When I played Paiute, my buddy and I got paired with a single. My buddy and I played the white tees (Par 72, 6035 yards, 68.8/111). The single played the yellow tees (next ones back, one up from tips, 6635 yards, 70.9/118). My buddy and I shot 102 and 96, respectively, and the single definitely was north of both of us, and had a considerably worse time. The game is hard, why make it harder unnecessarily?