The things that work for me: keep as a starting point a not too high velocity for all the patches, and use of the filter (cc24) for the non-cantabile patches.
Beside this I use the combination of Synchron Strings with the SYNCHRON-ized Strings (I use 4 players at the violins for example for this purpose), what also bring the total sound to each other. This makes the total sound also more living.
I hope this will help for you a little.
Another thing I do is, that with the Synchron Strings I only use the mics that are the most distant and almost not the near mics.
I came to this decision after a concert that I visited of the Rotterdam Philharmonic Orchestra in the concert hall "De Doelen" in Rotterdam, the Netherlands. I noticed, that in the concert hall the string section sounds so totally different from the studio recordings. It was almost a shock for me (with the emphasis on "almost" of course). So much darker, less harsh, warmer. I was sitting in the middle of the hall. I remember William brought this point in more than once. And I agree totally with him.
This brought me to the point to just use the mics that are the most remote.