This was implemented mostly to counter situations where your pet would bleed out in locations where it was impossible for you to reach or return to. For example, during Scarlet Spear, it was not uncommon for pets to die right before you were teleported off a Murex, and since you could not return it was a guaranteed death sentence for poor kitty or dogo. So in short, while it could use some tweaking, the feature is probably better than the alternative.
• A "current vault status" indicator for prime parts and BPs; (not vaulted, vault open, or vaulted). This should also be shown when making a reward selection after opening a relic. • Likewise, a current vault status filter at ducat kiosks.