When your empire starts to get a little larger, its often difficult to locate resources within your own territory. I had a shard extractor (or whatever its called) destroyed by roaming monsters. I wanted to go and rebuild it but I couldn't find the fire shard anywhere. I looked for an hour before giving up and I lost access to that fire shard for the remainder of the game. Extremely aggravating. What if my ogre village or dragon brood, or whatever got destroyed and I couldn't remember which of my 20 cities it was in. Being able to locate things in game is necessary on larger maps. In Civ 4 there was a resource option available that would make resource icons pop up which made them easier to see (and find on large maps). Extremely handy.
It would be nice if you could turn on filters while scrolled out to help you locate various items. I just couldn't find resources within my empire.
It would also be nice if you could label places on your map in game that you could see easily. If there aren't filters, having words showing where something is in game would be sweet. A player could scroll out and see on the overworld map (ogre village) in text that I added to the map.