I've been playing for a little while now, and I think there are two features that would really make gameplay far more intuitive, or at least convenient (for me at least).
The first would involve a more involved route planner than the current 'set destination'. It's very rare that I just want to go at once place at once - I usually want to go to this place first, then here, then there; it would be nice if I didn't have to keep going back to the map to search and find the next place. I appreciate that route planning is a pretty tricky thing to do well, but even a rudimentary version would please me lots (and I'm betting anyone else that's trying to find all the wee ghosties).
The second is something that I was just reminded of by another post (http://www.glitch.com/forum/ideas/10511/) - how bag organising seems to take up most of my time. The people in that thread make a couple of good points, about how maybe new stuff defaulting to currently open bag (a bit contentious it sees), and how dragging icons one atop another could switch the items (a pretty good/easy to implement idea I'd imagine), but I'd like something a little more tweakable.
I'd quite like to be able to set certain items or types of item to (if possible) default to a particular designated bag. Therefore anything I harvest goes into my crops bag, anything I mine into my ore bag, and so on. Obviously if bags are full there could be overflow options, or just revert to the current fill-from-left. It might just be me being OCD, but this would certainly save me some time.
Edit- OK I just read to the end of that other thread, seems other people are thinking the same thing too!