You're just hanging around the auction house when suddenly, with no warning, someone invites you to join his or her party. You're about to click the Let's Go! button - but wait, do you have the right equipment for the map you're about to join? You need information about the level, so you have to go to your social tab and find the person who just invited you (if he/she's there at all), check their gate and depth, then, unless you have that gate completely memorized, you need to go into the arcade and check what the stratum theme is, maybe even what exact stage they're on. Alternatively, you can try asking the person who invited you, which involves you typing out a question, the other person stopping whatever they were doing, and typing a response back, maybe even having to check the gate map if they don't remember clearly.
What a hassle. The solution? Have the Party Invite notification display the floor number and map name/icon. I imagine it's not too hard to implement, and this small addition can save a lot of time for many players.
WANT
+1