Username: Oncology
Suggestion: Concentrated coal deposit in the donor zone.
Why (how will it benefit players overall): This is more of a quality of life update, but currently we have a concentrated gold deposit in the donor zone but I think a concentrated coal deposit will be nice because coal is such a huge part of smithing with the need of multiple coal ore per bar generated and mining one coal at a time is tedious for those of us on the harder game mode.
If not in the donor zone then maybe this is something that could be placed in the citadel mining area or the skilling zone mining area.