Stay confindent, as far as I understood, you will be able to combine previous and new Libraries at least as soon as the Synchron-stage-venue for MIR is available. Which allows you to bring your dry libraries in a likewise acoustic environment so you may use the natural recorded acoustic of the new libraries with them.
Yes, that's the plan. 😊 We work on it.
... obviously you will still hear certain differences between the two approaches, but MIR will build the bridge between them. In some cases, the similarity between the room impression you get from Synchron samples and the MIR'ed version of Silent Stage recording is quite staggering. Listen to some audio files we created as proof-of-concept (with actual instrument recordings instead of samples, but the principle is more or less the same):
-> https://www.synchronstage.com/en/technology#!mir_synchron_tech
/Dietz - Vienna Symphonic Library