If you have thoughts about a feature you think would be useful, start a thread on the Model Railroad Hobbyist forum with Easy Model Railroad Inventory in the subject field.
Other users will see the thread and comment. I will also see it and use it as a source for new features.
Please keep in mind that some things are easy, some difficult, some extremely difficult. If a suggestion is only supported by a few, the chances are it will not be done depending on the difficulty.