Depends, in my opinion for a model like my grommet this is the best layout for users to print the model they want with the cover they prefer in a single profile.
Otherwise if you think about it I have 7 different plates, if I decided to make one profile per plate and then people started creating their own print profiles the page would get overran with profiles and no one would have an easy way to pick what they want to print.
On the alternative side, here is my How to Print Ice 
page and I have 1 profile for the test objects (3 plates) and 1 profile for curated pick and print “Ice Sculptures” (4 plates). Again using the plates inside the profile instead of 1 plate per option.
To answer your question, I lean towards the user experience which would skew towards 1 profile with many plates.
Edit: Here is hopefully the answer to your download question from @Tanklet 