I understand that the density is different in DV2014 and DV2015. But I think that if UU have problems with agents, then RR will be lower than in DV2014 and this will have bigger impact than density increase. Currently, comparing to previous year there are around 1,600 less members invited to CO from UU. Either this problem gets fixed and then your calculations will be correct and we will have cut-off less than 40,000 or if the problem is not with DS260 but with UU agents, then these 1,600 members will be added on top of 40,000 and this makes about 1,600 * 2.5 = 4,000 numbers.
I think that it will be both. There will be certain increase in UU but not 1,600. That is why my estimates are 42,000 for EU.
I think while calculating your cut-offs you could not predict problems with UU if there are any of course.
This is a speculation of course, but I am curious why there is such a big difference by countries. If KCC or winners have problems with new DS forms, I suppose that the problem should be similar for all countries in the region.