I FULLY agree on the whole lack of time to get to lvl 10 concept. It's why only my one char has a stone from below the first one. I got help getting to them, so went faster than I would on my own, but again, she's the only one who has any for a reason, I work, have a family and other things to do, too.
Still, I really want to go the whole way and get them sometime for others without having to do the sanctuary thing if I can help it, at least not for all of them.
Hoping there'll be interim stones on levels 6 or 8 maybe, someday! That definitely will help!