Of course, everyone understands that you want to keep many thousands of scans because it took hundreds or even thousands of hours of time.
However, it is also the case that T5 is pretty much completely in the hands of a few players/organizations and T4 for the most part. Or is it?
If the scans remain, no new player can ever find T5 and only sparsely T4.
If they are deleted, everyone has again all chances to find all ores.
Unfortunately, NQ had announced that the scans should remain valid. If I assume "equal right for all", then they just have to delete the scans. I have around 1000 scans. Too bad about that, but it's fair.
To really say something about the MUs, I have to play around with them for a while to be able to judge their usefulness. But I don't assume that NQ made it too easy. I liked mining, but it also took a lot of time, which I didn't have for voxel design. Now it will be different. A new challenge that will certainly change the way I play. I'm positively excited for what's to come!