Hedging vs Aggregating granular control in CFD's

Currently there is an option to choose between Hedging (or) Aggregating mode at a CFD account level.

It would be useful to provide granular control for this feature wherein user can choose which positions can be traded in Hedging or aggregating.

A user might do Hedging in Amazon stock and use
Aggregating mode in Apple stock.

This would open some wonderful options to users.