First suggestion is:
Since the coins aren't earneble by playing sector anymore low levels will have a hard time getting coin items such as luck. There for i suggest to transfer the lucky e.f to an reasonebly priced gigas amount. Otherwise it will be hard to make low lvls level up in rooms where lvl 172 is grinded.
Second of i am sometimes annoyed by the fact that when u go in shop and people whisper to u it cannot be read back and u might won't even know what happend so i suggest if possible that the lobby text stays readeble (including guild and whisper) for 100 lines. So if u join the lobby u maybe see some drama u can read back what happend.
Since i think low lvls should have it easier if they are new here i suggest staff organizes something where lvls such as 172 is grinded maybe they can arrange that people like me or other high lvls grind in such time, its pronounced in-game to make sure they know when the grinding wil start and they have it a bit easier also i would like to ask the 172 grinders to not be to exact about having luck, let a guy stay without it, i kept some friends over it aswell.
And as last maybe an addition to pvp section wich contains a no II skils or no coin skills allowed? I would use that button many times then probably