People seem to be overestimating how taxing a sytem like this would be. A glamour log would work similarly to how our seasonal armoire chest works or how our crafting and gathering logs work. It's just a list of boolean flags. Is this item stored? Has this item been crafted? Have you gathered this item before? yes? no? This works in a completely different way than what our inventory system does.

Not all data associated with our characters is backed up every 15 seconds. This is specific to our on hand items. I'm damn certain the servers aren't derpy enough that they are constantly doing checks on what's in all of my retainers when I'm running a dungeon. If done right a full glamour log would only be doing a verification on your items when you change equipment, and would only request the full listing of flags when you bring up the glamour menu. Ex: When you change your helmet the game would send a request to check serverside whether or not the flag has been activated for owning helmet #87.

The only time it would need to send the entire listing of boolean flags is when you open up the glamour menu. Even this request shouldn't eat up too much traffic as at the most each flag would be 1 byte. With more efficient coding you can bring this down to 1 bit per item. Iirc this is how the mog slips work for storage in xi. Each bit in the bytes used to store the mog slip's information is used as a flag. Each individual bit is assigned an ID that matches up with an item. A 1 is a flag that the item is stored on the slip. A 0 is a flag that the item is not stored.

If this truely was some insurmountable task then glamour logs like this would not be including in just about every single modern mmo on the market. Repeating myself here. Again, we've already got quite a few logs like this already in place. The game already has boolean flags to keep track of: What items we've gathered for every class, What items we've crafted for every class, what portions of the map we've already uncovered, what mounts we've unlocked, what minions we've unlocked, what emotes we've unlocked, etc... These logs take up next to no space at all.

With the last response on the issue given either there was a misunderstanding on what exactly the players were asking, or they are prioritizing more important matters first. I'm willing to bet it's the latter, and the excuse was a way to pacify players who have little to no programming background.