Never had to clean, size or anneal new Lapua brass.
I've been reloading with Lapua for all my bolt rifles, primarily in 3 calibers - .223, 6.5mm CM and .308 - since 2010.

Just for grins, I used to measure the length of the brass when I opened a new box.
Rarely ever got even one out of 100 that was not right on spec so I stopped bothering to measure them.

The annealing discoloration has always been very visible on each piece, but the discoloration mostly disappears when I clean them using steel pins after the first load.

Lapua brass loads and shoots great the first load and each reload.
I never anneal Lapua brass and rarely ever have a neck split before the 100 have been reloaded about 20 times.
I don't load near PMax so I usually get 23 to 26 reloads out of a set of 100, even with the .308s.
Generally, the primer pockets get loose before the necks split and that tells me it is time to open a new box.

Have never had dented necks in a new box. I wonder if Lapua Quality Control has begun to slip.