I'd like to suggest that the next packs you introduce have items that only take up one inventory slot.
I spent a good 10,000 ep on these Halloween packs just because I could and I know many others did, the amount of useless slots that the vanity takes up is frustrating.
I'd like you to consider thinking of reworking how you are introducing items and vanity, sure the vanity wardrobes are 'decent' but they are still a very temporary solution to frustration. All the useless gear/vanity that players have will be going straight into the auction house when it arrives (I assume).
I've only logged in briefly since the steam release, but I've seen players already complaining about space, and once players start getting into the higher levels and come into wealth they will notice how tedious it is keeping track and sorting items.
TL;DR
Think about reworking how the inventory size of items are, how item sorting works and change the way packs work so you don't end up with shit tons of useless, worthless vanity. (I suggested a token system before, feel free to find the thread).