Rendering of articulations

Except for stacattos, all notes are apparently played (or exported to MIDI) with their exact theoretical length.

For instruments like piano lacking the ability to play a real legato, it would be nice if the note length was slightly longer than the notated length when placed inside slurs, slightly shorter when played detached (outside slurs) and matching the theorical length if marked as tenuto.

To make if possible to fine-tune this behaviour, it would be great to be able to edit manually a note’s length - just like it is possible to edit its velocity. It could be an absolute value, or a relative value compared to its “facial” value, e.g “%50”, or “-120 ticks”