Individual pin icons for better visual differentiation

As a user, I would like to be able to visually distinguish pins not only by color, but also by different icons - for example, for categories such as maintenance, control, security or costs.

Icons such as 🔧⚡️🔥💰 would make it possible to recognize the type of entry at a glance without having to click on the detailed view. This would be particularly helpful for users with many pins of the same color. The combination of color and icon would significantly improve clarity in projects.