My organization is about to make the jump from Totara 2.7 to Totara 11. Based on some research I have done it looks like the last time Moodle core was updated in Totara was Moodle 3.0 with Totara 9 and from there Totara planned to modify the core to suit their needs. I am looking for concrete information about the functionality of Moodle plugins with Totara 11. I have seen the response from Totara posted several times indicating that Moodle plug-ins were never officially supported but most will probably still work. I want to know how much this still applies to Totara 11. 

We are an enterprise organization, so multi-tenancy and hierarchies are essential features for us, but I have seen several plug-ins from Moodle that would benefit us, one example would be the collapsed topics plug-in. If anyone has experience with upgrading their system and how it has affected their organization, as well as their existing Moodle plug-ins or ones they wanted to implement, I would be very appreciative if you would share it.