EGO is getting slammed. I sometimes have 200+ scan events waiting. It's DW 2.Scan value is as correct as it can be. The actual amount you will get will likely be much higher as the multipliers for first discovered and first mapped are much bigger than the first discovery bonus used to be (more than times 9 if you get both) but we don't know if you'll get those or not so don't include them. The bonuses for full system scan/mapping are not shown either and can be significant.
I've not noticed any EGO issues