Not sure how to call them in english: the numbers or digits or ciphers that form an entire number. Let's see an average critical damage example from all expanions.
The Burning Crusade: 5.000
Wrath of the Lich King: 15.000
Mists of Pandaria: 100k + !! 6 ciphers!
The same problem is also about health: with cataclysm we have reached the K symbol because of the enormous amount of health (Stamina had been scandalously pimped up). It was much better with like 25.376 as was in wotlk.
X X X X X X numbers are too much I think. It is much better for the interface and for the human perception.
Think also about the future: should we see one day 7 ciphers?? Million damage?? I hope not really, quite & cute numbers are much more lovely.
So for the next expansion I think we should all have a debuff (example: "Oblivion of N'Zoth") which reduces all attributes by 99%
It will be averagely like:
HP from 500k hp to 5.000
DMG crit from 200k to 2.000
Let's go back to the weak times!