Ok to become a bit more precise ( to make it more realistic to aplly that unification to the VSL-Univers)
The Reason why I suggested the VSL-Devellopers ca. 10 Years ago this Treestructure was the fact, that VSL always have had the most detailed Repertoire of sampled articulation variants and exactly that made it the more Variants became available the more difficult to reasonable manage them (search and apply in a musical reasonable and Cubase-Expressionmap compatible way, since no Expression map could handle as many Articulation variants as VSL provides).
I see that the amount of variants does it likewise seem to make it difficult to "layer" that much most differentiated VSL-Articulations to the in most cases still notably less detailed Articulation repertoire of other Libraries.
So just come back to the Idea why I suggested to found such an hierachical tree like organisation of Articulations: It was the expierience, that Expressionmaps make sence as long you handle with them a relative short list of common Articulation types for instance (one of) the first slots leaving the further differentiation other options of sampleselection like velocity, seperate Midi CC, HArdware Midicontroler, Wheels and so on.
In so far the subordinate "branches" or "Dimensions" of this Dimension are always not controled in the same way than the more basic first slot, I think especially the Dimensiontree-architecture should allow you to unify the basic classes of articulations, while it can leave the decision for a certain Variant still open for other controlers.
In so far for a reasonable Expressionmap which is small enough to be handled efficiently you scarcly need more than the most basic decisions for the type of Articulation. I think this potential of the tree architecture is what makes it even more probable to streamline the articulation-organistion even more consequent unified as it is already in most Presets done.
My current suggestion just want to ask you to combine this Dimension-tree-architecture with the in the current market well known possibility to chose the selectionsignal from all available options up to the free defintiion of certain values, rangges etc. for certain CC, controler etc. This is definitly nothing new neither for VSL nor for most competitors. But just don't stop with it in the slots (for a whole group of Articulations) and make it available for each "node/branch" or single articulation-variant of your Dimensiontree.
The necessary popup must not be as complicated as the the long lists to chose from in the Automation section of VE. As I said: if you look on OT, Spitfire or Eastwest, you can find very manageable options, which might be easily integrated in any popup with wich one would desire to define a certain position everywhere in the Dimensiontree.
Just a thought, what might help the Synchron player to easily keep the level with his competitors in this point.