I just found out when fiddling with my mod list settings, that the way you nest you add-on-mods inside MODS folder inside the IRAI folder is not JSGME compatible - it breaks JSGME "Mod profiles" functionality.
Also it may be confusing to see three new mods appear on your list after installing one.
The idea was brilliant (chapeau bas!), but potentially destructive to JSGME users.