Ok. As promised I ran it on live to compare. I ran it on a level 4 so 50% penalty. And I didn't get the 10% for kills... so:
base 56 awarded 114.
x 1.1 for length, x 0.5 overlevel, +10 persist, +10 flawless, +20 daily, +25 tome, (+hidden 200 first time reaper). Consistent with the way it's being calculated on Lama. Which means: reaper xp is getting a straight buff. There is no change in the way it's calculated, we are just getting more for daily bonus and being allowed to run higher level. Every scenario for rxp is either the same or more in the new version vs live.