This 3ds Max blog is a team effort by Nicolas Holst, Lee Montgomery, Vishnu Ramdass and Anil Choudhary.
Some files end up with a large number of mixers, that can cause the files to become extremely large and therefore slow to load.
A quick explanation on how to get the equivalent behaviour as the affect pivot only / affect object only when adjusting the pivot.
MDL stands for: Material Definition Language, this is an initiative by nVidia to standardize physically based material designs in a common format.
In your rush to get going with 3ds Max 2016 you just clicked on Classic but now you want Design (or the other way around).
Link to the hires Populate data for 3ds Max 2016
Links to the download page with the product help installers.
Quick workaround to get DBR working in 3ds Max 2016
New feature in 3ds Max 2016: mental ray Light Importance Sampling