To some of you, lack of IC consistency might not mean as much but I know that it has a significant importance to immersion for others (myself included). This does not necessarily entail realism, but that you can at least convincingly imagine the IC perspective of what's going on.
Ultimately, you could argue that dungeon instancing a la WoW would be the most convenient and everyone could get all the spawn they wanted - but (at least to me) it makes the experience a whole lot more flat. Consumerism isn't always great. Too much idealism you might say, but it's the same idealism that's shaped this entire project into what it is.
The current system encourages you to go look for where the spawns are. I realise this makes it more time consuming, but there's also the scrying in the mist camp. Though it's a bit outdated, it was actually my plan to start updating it now. Plus, the current spawn shortage is exceptional too, and will be fixed by next update (once we get that working).