That's true it would be nice to have more layers. Though it is inconceivable how difficult it was to record what is there in Dimension Strings, plus the editing and post production which is probably beyond normal human limits of endurance. I have not had problems with the amount of layers that are present though of course I agree that more samples are always better!
I wish more samples could be recorded - Dimension Strings III - which would include sampled and not just performance trills of varying intervals. Also more dynamics, many other things. But I think VSL may have moved on from the Dimension recording technique. It is incredibly labor intensive, and a lot of people don't notice the difference - stupid and/or tone-deaf people, - even though it is beyond any other string library ever recorded.