I was thinking that if all content in the game listed it's "Recommended Accuracy", it could be very beneficial to everyone in the game.
But first, just to make it more clear, I was thinking of it like how DC Universe Online did it's "Recommended Dominance" warning. Basically, in DCUO, Dominance was a stat that allowed players to get aggro better and be able to stun/bind, etc. enemies. If you did not have enough Dominance your attacks would have a high chance of failing or having less of an effect. Each instance had a warning stating what the recommended Dominance was. Having less than recommended did not lock you out from the instance.
Now what if FFXIV instances had this? I believe it will be very helpful to know the Recommended Accuracy or Cap of an instance before you go in. Players will now be able to create different suits of gear for different instances depending on the Accuracy cap.
Example: You want to get some gear that's stronger and has better stats than your current stuff but you're like "Darn... that'll put me down to like 400 Accuracy. I might be missing in Void Ark". Or you have a 200 piece drop in Void Ark and you say "Wow these are both 200 but this one gives me some Accuracy. I only have 540 right now so this'll help a lot. I'll never miss."
But if you could see that Void Ark actually only needs.. say 350 Accuracy, you wont need the Accuracy from that piece. And you can continue to stack up on Crit, Det, and Skill/Spell speed or whatever else.
Players will be able to create different sets of gear. They can have a raiding set and a non-raiding set. Their non-raiding set could have a lot more Crit/Det but lack the Accuracy for raiding. Players can make an OP damaging set for non-raiding because they don't need the Accuracy. And players may save money if they go around spending millions upon millions of gil pentamelding gear for Accuracy. I'd be mad if I melded all my jewelry completely just to find out I actually only needed to pentameld two..
And SE can make the Accuracy caps be based on what they made it. Just show it. I can only assume dungeons that are the same ilvl require the same Accuracy.
Examples:
Saint Mocianne's Arboretum
Recommended Accuracy- 425
Pharos Sirius (Hard)
Recommended Accuracy - 425
The Void Ark
Recommended Accuracy - 450