I feel Bungie intentionally left drops very low to start this expansion and I think they'll balance upward if they see that they are, in fact, too low. They did this with Archon's Forge and it feels a little better after the slight buff to offering drop rates. It would be a total disaster if they made the drops too good and everyone leveled too quickly. The economy is pretty delicate and you can always buff a little but make the drops too good and the damage is permanent.