While it sounds handy - it could also result in chat bans, as seen with the mod for World of Tanks that says "I'm spotted" for example.
Imagine everyone on your team using that mod, it would be a constant spam, especially if it's all consumables.
There used to be a mod that showed used/currently active consumables on the Over Target Markets, but it was outlawed since it used the "scripts.zip" file, and I don't think there has been made a replacement yet, that doesn't use "scripts.zip" file.