It would be nice if YASR (at least the table and response tabs) supported the SPARQL-star result formats (i.e. where able to display bindings where some variables are bound to quoted triples).

Note that the RDF-star CG report is now considered pretty stable (we are considering publishing a final report soon), and SPARQL-star is already supported or partially supported by a number of triple stores, so this could already be useful (see example).

The changes to the SPARQL result formats (XML and JSON) are documented here.