I agree with C-dog here. Best I usually accomplish is a HTR (1-20) in maybe 5-6 weeks. I am the type that logs in every day, but I don't have the endurance or will to run more than 2-3 quests before I need a break. I might stay logged in all day (or most of it) but I am often afk doing other stuff. And when I run the quests I am pretty much OCD about completing everything so my "xp per minute" is not as high. I enjoy playing this way, because I don't consider DDO a "video game" so much as just an enjoyable old fashioned dungeon crawl.
Anyway, I'd like top see the xp stones stack, or make a special bag for them. Managing multiple mules sucks, and you still need to reserve the space in your shared bank to get them from the mule to your character. Right now I only save the stones that are over 5000xp, but using the others seems a waste when there is plenty of quest xp for most levels.
My personal usage:
1. Level up to 3 (or sometimes 4) on a TR
2. Jump start an iconic to whatever level above 15 I can (closer to epics).
3. Advance those couple of levels where I really hate more than half the quests.
4. Lesson that long slog from 18-20.