It seems like as more areas are added to the server the thinner the spread of explorables gets. A slight increase in the rate in which they appear would to compensate would be nice.
If i'm totally off on how explorables work then just ignore this. I might just be super unlucky.
I'm a huge fan of random areas to explore, and feel like the amount that were seen around mid EFUM was awesome! Turning up how many arrive now and then would definitely be a great addition and promote some more travelling.
I still see a lot. I feel like too many and you get roving bands of druids/nature PCs regularly cruising their spawnpoints.