Many people here are - rightfully - stating that running all the sagas once on Epic Hard will let said character TR with your current proposition. (which I found awfull btw)
BUT THERE IS A PROBLEM I HAVENT SAW MENTIONED YET.
Most of the sagas include high level content (running EH What goes Up on level 21 - 22 will be punch in stomach) and I am pretty sure, that last time I hit level 20 and stepped into High Road, I was NOT able to open Epic elite difficulty and possibly not even Epic Hard difficulty becase of the min level lock Turbine introduced in last months.
If the point of sagas is to promote variability of gameplay (which I dont rly believe), then this is a very bad decision, as those not wanting to dwell in epic content will have to run epic sagas in exact order to be capable of opening them.