I don't have an issue with having unmarked areas on my map. Discovery is one of the pleasures of playing. However, once I have found a place, it deserves, in my opinion, to get a map marker/icon. At the very least, I should be able to drop a map marker on it.
I recently found a neat little area in downtown, but I was over-encumbered. I stored a few items in a nearby dumpster with the intention of returning after a quick jaunt home. For some reason, I was not able to drop a map marker on it. Goodness knows, I tried. Thus, I had to rely on memory. Unfortunately for me, I had a devil of a time re-finding the place. Boston alleyways aren't the easiest to navigate in present day, much less when they're filled with rubble and raiders.
I'd love to know the logic behind having an area not show up on my map after I've walked through it several times. I don't care if it doesn't reward discovery exp -- just give me the icon so I can find my way back there again. Does anyone know why Beth decided to do it this way? I can't remember if it was this way in FO3.
For the record, I *was* eventually able find it again and, thank goodness, my hoard belongings were still safely stored in the dumpster. Whew!