Thank you for your comments, Guzzist. I believe it is possible that I am not understanding the features in the current product. However, let me try to explain the difficulties I have with the POI feature.
'Search' has a list with many types of pre-defined Points of Interest. I live in the US, and have not found many entries that are helpful. Some are incomplete (no name, co-ordinates only) and I have found some to be incorrect. I have this type of POI available on my Garmin, and that feature is seldom used.
The next tab is 'Manage'. Here I can use the map to 'Add' locations, select from a number of useful icons, and add a name. Once a name is on that list, I can only delete it, I can't keep the POI but make it invisible. A simple check box would do. They do appear at any zoom level, which can be good or bad. No additional text fields are available for comments. The list is not available in other routes. However, I can export them to create my own POI library that can be loaded into any route.
Which brings us to the 'Library' tab, and here I have a list available of anything saved and reloaded from the 'Manage' tab, or created with an external editor. However, it's not possible to see individual items, so I can't verify that a POI that I am looking for is in my custom library. It follows that I cannot turn on and off individual items. And the POI's are only displayed when zoomed in to a particular level. Also, the only information saved is the co-ordinates and a name.
I think the routing features in MRA are the best of any app that I've tried. But I spend much more time planning a trip than actual routing, and that is where I think additional features would be beneficial.