Folders for tables
The ability to group tables into folders / by type for navigation would make the UI much more user friendly & less intimating.
For example you may have 10 relationship dim tables defining aspects of the risk & 10 others defining aggregated reporting buckets. At present these would appear as a list of 20 separate tables in the UI whereas the ability to put them in 'folders' (like Risk Analysis & Risk Aggregation in this instance) would make a much cleaner UI. Large models with lots of items quickly look clunky.
Yes please! This would huge for both end users and developers of Power BI \ Tabular Models.
I just posted a similar request over on the Azure Analysis Services suggestion board (not sure how many of the suggestions are shared between dev teams)