Hello Mavros!
Thanks for your feedback.
1. The Dorico expression maps for Synchron Strings Pro have CC1 assigned as secondary dynamic. So it's correct that the VelXF sus presets get loaded.
2. It's true that in some expression maps secondary dynamic is CC1 and in some it's CC2. However, the auto-assigned presets always should be in line with that setting. No manual setting should be necessary. If you think that you have found an instrument where this is wrong, please let me know the library and the instrument.
3. You are right that our Master Volume levels are balanced and that the Dorico mixer removes that balance by sending CC7=100 to all instruments. Anyway, I would always newly balance the levels of all channels for every project. Our levels can only be a starting point and are not carved in stone.
Best regards,
Andi
Vienna Symphonic Library