CJA Marketing Channel Overwrite Functionality

Description - Our team is looking to have a view where we can see marketing channel overwrite capability in CJA similar to AA for initial adoption. We would love to be able to compare the overwrite with non-overwrite functionality so teams can leverage which view works best for them. 

Why is this feature important to you - Right now adoption will be harder due to the large discrepancies in some areas due to two different functionalities. 

How would you like the feature to work - It would have a way either through derived fields or a new feature to look at marketing channel overwrite or have the current marketing channel attribution in CJA. 

Current Behavior - Currently the channel overwrite is not available in CJA and creates discrepancies between both platforms.