I put it into the survey they had recently, but one thing I think they should do is to consolidate Accessory Storage. 

Right now we have Base Set + 11 Special sets per Faction. We have 1600 Accessory Storage. There are 15 about to be 16 factions. So 16 * 12 = 192 Sets of Accessories. 9 accessories of each set  which would be enough for 3 sets of 3 for all factions is 1,728 accessories. Which is 128 above the cap. 

People could sell off a lot more accessories if the way accessories are was redone. With all these special sets and it not just base sets it doesn't make sense anymore to have them split up by faction. You just don't have the space anymore. 

We can still have them limited to groups but reducing the limitation some. For each faction there is some greater collective they are a part of. 

Instead of Banner Lord, High Elves, Sacred Order, Barbarian accessories. You instead of Telerian League Accessories.  Same with the other 3, Gaellen Pact Accessories, The Corrupted Accessories, and Nyresan Union Accessories.

This would greatly reduce the number of sets in Accessories from 192 Sets down to 48 sets. Then every time they add a new Special 9 piece set with accessories it then only adds 4 more to the set count and not 16. We could then delete so many accessories instead of "Well I only have 8 of this special set for this faction. They aren't good, but need to hold onto them for set bonus maybe later." 

I'm sure we will have even more factions after the one we are getting in the early part of next year. 

It's odd that artifacts are universal but accessories are not. For us, that would be a great change, but for Plarium - I assume - it would probably mean less farming and therefore less spent on gems and energy bottles. It's also why they won't increase the 130 energy cap. Anything that could impact spending is tossed out the window.