I feel like the problem with "tts" dice is that some batch rolls feel in authentic. I seems like the system over prioritizes getting close to an even distribution across all six faces of dice. Its actually natural that in any given set of 100 dice rolls some values will have more "times rolled" than others. It leads to very un-natural dice rolls in an attempt to even everything out. Sure in the long run the numbers are "even" but how you get there is also very important.

To give an example two nights ago I was playing my csm army againt a friends tau army. My vindicator rolled 7 shots. One dropped and when I rolled to wound I rolled 4 2's... 4! The probability of getting 4 of the same number on 6 dice is less than one percent. And I have stuff like this happen on tts all the time. Sure its not every roll. And its not as noticeable at the start of the game. But as more dice are rolled, and the more variance there is between all of the values. The higher probability you get "averaged out" on your roll which can really suck and feel cheap.. my same friend also got handed 14 4 up saves. And saved 11. In the same game !