The datacron drop rate is averaging 20% across 115 recorded runs and 7 contributors. You may have had a bad run? Or have overestimated the number of runs - 30 would be 6 refreshes.
The bigger problem is that sector 1 is our major source of datacache, and has larger average datacache drops than sector 2. It is averaging ~85 datacache per rep. For a level 9 datacron, we need 7.5m datacache, with no rerolls.
That is 88 repeats for sector 1. In that time, we expect around 17-18 datacron drops, for the datacache required to level one single datacron to 9.
In other words, until they release some control over datacache drop rates, the datacron excess will not go away - that is still a nearly 20-fold excess.
Last conquest, sector 5 dropped datacache at approximately twice the rate of sector 1, with no datacrons attached, and with useful mk3 upgrade and reroll materials. That allowed us to target our farming at both the datacache and the upgrade materials required for the upper tier upgrades. That option is gone now; rerolls and datacache are both missing.
So for feedback: these economy changes do not solve the problem they were aimed at, and appear to increase the frustration of higher level upgrade farming over the prior datacron set economy.