I think it would be cool if they added glowing effects to weapons that are upgraded with there corresponding attributes. I.E red glow for spicy, green glow for sour, blue glow for mint/fresh. The weapons look quite basic even when they are upgraded with the exception of the staves and spicy coaltana.

Building on your idea - I'd like to see weapons that you've accidentally thrown or dropped stick out like a sore thumb! Better yet - have it automatically return to your inventory after a certain amount of time that has passed.

How many weapons have you lost because you couldn't find it? Not a big deal with a low-level wep, but when you have a level 3 and it's been maxed out - that's a lot of time and materials POOF. Especially superior material.

Generally you get a small icon above the dropped wep, but many times I can't see it or that icon doesn't show at all. Leaving the area and returning saved me a few times but this doesn't always work.