Just one thing I noticed you can no longer use the House with the green curving line to get info around your destination. You use to be able to click with the cursor on a spot on the map and then click that but and safe the point as anything you wanted or get info about that spot.
After noticing this I came on here again to look at what each button meant and I didn't see one on there for info button. If it wouldnt be too much trouble to add that back or let me know which .ui I need to edit to get it back under the drop down that would be great.
I made a version with a button in the POI section that has the functionality you are talking about. It is kind of a small change so once I come up with some more changes I will be sure to post an updated zip.
Or you can try it yourself, which I strongly recommend. 
Open navigatemap_800_480.ui and change the following code/layer from this
to this
If you look carefully you are adding an extra button to each expandable menu, one while navigating and one while NOT navigating.
and add the .bmp file attached here to data\ui_pioneer\800_480
It will be a good chance to get your feet wet with modding. If you can figure out how to do this you will be able to figure out everything I have done so far (well with a little more digging around).
k_but_poi_info.zip