1.) Pagination: Allowing users to endlessly scroll down instead of having to click between pages and re-sort every time they wish to make a selection.

2.) Allowing sorting by quantity - For offloading bulk items like food in a timely manner (pagination would help this as well.)

3.) I don't know what's causing it, but fixing the sporadic search function in the inventory. IE: Typing a keyword in, followed by a space and another word causes the inventory to completely wig out and switch back and forth between sorting by the first word and both words.

Other:

1.) User Shops: Can we implement some sort of max inflation limit on items in user shops? IE: If an NPC sells the item for 5k, a user shop cannot list it for more than 10x that amount (or some other number) and on items over 1mil, that x amount decreases to close the gap.

2.) Collections Suggestions: This one sort of falls under inventory management, but not wholly so I put it here - It would be cool if there was some sort of tooltip when you're in your inventory or in the collections, it tells you "hey, you've got over 50% of this collection in your inventory, would you like to submit them?" Because there are SOOOO many collections and I have SO MANY ITEMS that it's impossible to know where to start and whether or not I'm already close on some of these.

3.) Games: More interactive DAILY games like the one that was introduced with the carnival update for the balloon pop. It is interactive and entertaining while still providing a reward and making it worth the time. Most of the games are just a chore and feel unimaginative. 

4.) Planet Art: This one isn't really important, just a fun extra. It would be really cool to see an art update on the planet maps and their respective locations. I know we have FANTASTIC artists that could do something really neat with the technology we have for digital art these days!
5.) Chat Box: Blocking of users in shout box.

I might add more to this later, but after mentioning something in the shoutbox, it was suggested to me to start a thread so I have. Hope some of these are helpful! Other players or staff, feel free to build off these suggestions or provide alternative solutions.

I've added support to sort Collections by ones that can be finished most easily :)