I thought it would be interesting to have a way for Agent 47 to cleanup crime scenes or blood. There are 2 popular games on steam about cleaning up things like Viscera cleanup detail shadow warrior and santas workshop. It could be a fun technique to leave no traces behind if things get messy. This shouldnt be required but would be fun to see in the game I think. People seem to like the idea of cleaning things up in games, in Hitman it seems to really fit so noone knows he was even there.
Maybe instead of a sniper rifle for example Agent 47 could opt to bring a mop for example.