Hey Corona Team,
thanks for giving us such a great piece of software!
Are there any plans to bring the material library further? i mean try to let people create and integrate their own materials and share them?
I think a kind of material browser system would be a big part, where i can save and transfer materials from diffrent projects in and save maps and settings.
OFC also to save vray materials as well 
Any plans?
thanks guys
Has been requested before on the forum, and noted before that expanding the functionality is planned - was even noted in the release blog for 1.7
“This is just the first iteration of the Material Library, and functionality and features will be expanded in the future, for example to allow you to add your own materials – keep an eye on the roadmap where we will be announcing the future plans for it!”
https://corona-renderer.com/blog/corona-renderer-1-7-for-3ds-max-released/
However, it does not sound as if user materials will find it’s way into 2.0 either.
AFAIK it was already confirmed - no custom materials for V2.