Easier access to DataAssets is something I’m working on for the 4.16/4.17 time frame actually. You can’t have a DataTable of DataAssets because DataTables are in memory as a single asset with multiple structs, whereas DataAssets are one “row” per file. When I’m done it will be possible to easily get a list of all DataAssets of a certain type, which you can then use to do various operations. I might be able to make a DataTable-like interface for DataAssets as part of that, it’s still in the planning stages.
Generally better access to Data is something I’m interested in, but nothing concrete is planned for DataTables specifically.