Hi Daniel,
Most probably you’ve already seen this, and the link inside the topic:
In my personal opinion, would be nice if you unite both Explode and Generate Notes From Chord Symbols features in one powerful tool.
The Generate Notes From Chord Symbols has arranging advantages over Explode, that I would like to use when exploding from piano to orchestra, but at the same time to preserve the Voice leading, which is the only advantage of Explode over Generate Notes From Chord Symbols.
Of course in the future an Orchestrator/ Arranger Tool, that allow us more advanced and faster manipulation will be a game changing for Dorico. 
Best regards,
Thurisaz