My opinion on positionals for a while has just been to remove them.
Back in ARR, there was no true north, and DRG used to HAVE to hit their positionals to continue their combos, then they changed that.
When true north was added, it felt like a bandaid fix for an existing huge problem. I recall when they got rid of TP, and then got rid of enmity management for DPS, I feel like positionals should be the next thing to go for the game.
The thing is, fights just become a lot more fun and less stressful without positionals. P2S is one of my favorite savage fights in the game because the boss has 0 positional requirements, and when a boss has 0 positional requirements you can actually do some cool stuff with boss mechanics.
It's just an archaic system at this point. There are ways to make melee jobs more technical without needing positionals, hell many melee jobs are still very technical even if you ignore their positionals entirely.
Though, in my honest opinion, if we want a compromise, just fold all positionals into counting for both flank AND rear, but not front. Encourages DPS to stay behind. Maybe add more cleaving autos to bosses again! That'd be fun.