There is a very important addition I think has been missed during the development of this feature,

SQF Commands to handle model selections:

ctrl ctrlModelNamedSelections LODName - Returns named list of model selections in a specific LOD of target object control
ctrl ctrlModelSelectionPosition [LODName, SelectionName] - Returns the position of a selection in a specific LOD of target object control

These are VERY important because currently, in ArmA you cannot get named selections for weapon models - because they are not defined in CfgVehicles.

With such feature, advanced UI functionalities can be implemented in SQF.