For me, it's not the player, it's about the samples.
It's curious: I don't like the sound of any of the Synchron libraries, but I do like the VI instruments put into the Synchron MIR venue. This combination really shows the quality and the strength of the VI series (together with some of Dietz' wizardry).
It's their legacy, this is true, and it's still way superior to all libraries I own and never use. VSL did everything right in the first place: the recording, the quality control, the scripting. If you want to play/perform a virtual instrument like a real instrument, you have to buy VSL or the real thing. Even though there are good "modeled" libraries out there, they don't sound good. VSL is so well scripted, it's nearly like a modeled one.
It's good to have options, and I totally understand that new users would probably go the Synchron way, because it's "mixed" out of the box. But maybe it's due to a lack of marketing, I don't know, and I don't want to blame anyone. VSL is so humble, in my opinion, they have achieved a lot with the VI series, and there isn't much talk about it. New users really don't know the real benefits of the VI (and also Synchron) libraries, why they are different to others and what the performance patches stand for.
I also don't like that VI prices have been reduced to, say, more competitive ones. Yes, you heard correctly. For example: Two years ago I paid nearly twice the price for Dimension Strings. You get a crazy amount of articulations and samples, you don't have legato crossfades; VSL's legato recording is the king of legato sampling and, of course, it should be more expensive than others... It's really a shame. A competitive library doesn't have the famous performance repetitions, trills and legato, it's a totally different "experience". And you have absolutely no bugs, latency or crappy programming. I don't need 20 microphone positions. :D
My advice: redo the website, clearly show the USPs and what the libraries can do (better than others). Don't be so humble, do some bragging like the others, because you are the only one who definitely earn it.