If you remove the issue type bug from your on-demand Atlassian, because the rapid board cards colors are not configurable, you can never have "red" coloured cards again (no way to include it back)

This is both a problem that I have and a limitation of the platform that does not allows me to setup the color of my cards for the Rapid Board.

However, as a feature, we are also locked up to "recover" the possibility of having a "red" (which I think is very important) card on the rapid board, unadvertedly.

Either an option to recover the "system issue types" (which would be more related to JIRA than to GHS, or a very simple feature to set the "default" colors of issue types that would reflect on the GreenHooper Rapid Board.