Incidents based on changes (or other objects) - specify cause of ticket

We've seen that we can associate tickets and other types to a ticket. But how to distinguish e.g., between a change that was a result of a ticket and a ticket because of a change? 

One can associate changes in tickets but there is no indication if the change was the result or the (root) cause of the ticket.

Wouldn't it be a useful idea, to specify the cause of a ticket? And causes could be changes (most likely), or other objects like project tasks, release, etc.

Also, in the solution-entry one can specify a solution type but no relation to a type (e.g. a change). 

Wouldn't it be a useful idea, to specify the solution of a ticket and link the "solving" item (e.g. a change)?