Because they are simpler than many mods already out there, and they do not affect gameplay at all, only convenience. Perhaps this would make it simpler still: It occurs to me that a single enhancement called "display levels" would do everything I proposed re SkyUI and more. Players could assign each item in their inventory to one of four levels numbered 0-3. They could assign (and change when desired) a default level for items added. And they could easily set and change the current display level to see the inventory. The levels could display in either separated or cumulative mode. I imagine cumulative mode as the default, but some players might prefer otherwise. In this mode, level 3 would display everything (like SkyUI at present). Level 2 would show everything except those items assigned to level 3, which would be hidden. And so on-- display level 0 would hide all items except those assigned to level 0. Do you have items relating to quests that you can't complete or are sticking around due to glitches? What about your list of a dozen Stones of Barenziah, only half of what you will need for them to matter? Elder Scrolls, Black Books? Just put them in level 3 and, unless you really want to see them, it can be as though they don't exist. You can also use level 2 or 3 for relatively permanent and essential items like weapons, apparel, and the Black Star (probably most of them easily accessible in your favorites list) to prevent storing, selling, or dropping them accidentally. Level 1 could be the default for items added to the inventory (usually by foraging, looting, or trading). Level 0 would be ideal for items for sale or storage ASAP. The concept is simple, clean, and flexible. How easy would it be to implement? I have no idea, but obviously mod creators have produced much more elaborate things than this. I've programmed in various languages including assembler, but don't know the first thing about creating a Skyrim mod. If I did, I would try to write these mods myself.