The ability to place personal markers on the mini map to keep track of vending machines as I descend and ascend floors. Backtracking for food, crafts, drinks and throwables is a pain when you can't remember where those machines are. Something like a colored dot or square...that or an option to choose what markers pop up on the mini map. I don't really use lutefisk shrines so not having them pop up would be helpful and singling out machines over those would be more beneficial.
Right now, items on the minimap is hardcoded I believe. The only thing that can be modded is the images that are displayed on the minimap. They are located in your DoD directory under the ui/icons directory. Just look for the ones named minimap. Not all of them are used anymore but you should be able to recognize then ones you want to remove and just replace them with a png file that is all transparency or only has a single dot in it or something of the sort. That's if you want to do something right now, you can. Or you could look at http://community.gaslampgames.com/threads/cleaner-mini-map.3394/#post-37153 for a little mod r_b_bergstrom made.
Stop turning in your quest items. Drop them where there is something important you want to remember. This works great for anyplace you want to keep in mind (reagent stashes, dispensers, door that shall remain CLOSED, etc.) and really, it's not like Incosequentia was going to give you anything good anyway. Right? Though now that i think about it, it would be cool if there was an item (like a road flare or sidewalk chalk or something) that had a map marker like quest items do, but you could stack it. This would making navigating the dungeon easier and it should be fairly easy to implement since the code for map marker items is already present.
Didn't know quest item markers would still show up if you dropped them on the ground again. Will keep this in mind.