While I am not sure why the pxCMISProvider still consists of items having "experimental " as suffix, but i am sure there is a provision to define your own by leveraging pyCustomCMISProviders data transform which gets called from pxCMISProvider .
Yes, for the last two years the data transform which populates the list (with experimental suffix) is not updated.
I wanted to know if we have updates on that. Definitely we can try using it for the customer system here, but before jump in want to set my expectations correct. If its still experimental or evolved to provide needed features.
The values in the Data Transforms were the understood/suggested values for certain ECM products at the time at which the Data Transform was made. As we do not have separate entries for different versions of the products, this is a "use but verify" situation, and the user should always match the service provider's recomended settings.
We periodically update the Data Transform if we find an error or one is reported to us.