Chart Add-on components

We know CUBA-Framework as capability to add on many genre of components e.g. JS, GWT, Vaadin etc. However, adding pivot table in V6.4 has been a great idea which allows a developer using a standard extension. Can we also consider few other components add-on like pivot-table? example:

  1. Gantt chart (
  2. Organization Chart

This request has been replaced by another idea here: