Can we log to log file that is the unused object list?

If we creating, we are a lot of object, for example rails.
Because, rail objects have to create each radius.
But, route files are so many.
Deleting unused object work, that is fetch the object numbers and route files are very hard.

And if we are regist a lot of objects, the loading time and waste a lot of memory.
So, if we can find unuse objects easily, object deleting work is very useful.

I think that would appreciate your opinions.
For example, the another new log file(this is report, no error), implementation to OpenBVE or 
RouteViewer?(because not driving, for creators), etc.

Can this also acknowledge the existence of other route files which use the same object folder? So you do not delete objects or sounds that are used by other routes?

This is an idea, and I wrote it with the hope that it would be adopted, but I think it would be better to include the content of the your idea also in a report.