possibility to add another block after the last one

at the moment it is not really clear why by design one cannot extend the integration further (a + sign after the last block) and has to just add block in the middle.

This is very limiting especially if one is redesigning the whole integration, because it forces user to delete and recreate blocks in different position (note that no drag&drop or saved configured block is available at the moment to kind of workaround this design flaw).