See my previous message about how tags could be used:
About the automatic link generation i.e. “clickable and easily searchable”. You can use Obsidian URI to perform searches by clicking links. Putting these links manually into properties can mess up property value based queries but you could maybe use css to display links so that property values would remain untouched.
I’m 100% sure that in future there will be a feature in Obsidian to easily generate links from searches. You could then put them to your properties as text properties or use css to indirectly have links in your properties. I’m not sure if search links for properties could be generated implicitly in general as a feature because we don’t know exactly what should happen when you click a property value (you could want to edit it, copy it etc). With tags you know what to expect when you click it. We could apply same logic to properties and introduce new property types that will create search links implicitly. These could be called super properties.