Product Enhancement: FIFO enforcement on Profile Ingestion

When ingestion data via HTTP API to profile, FIFO is not guaranteed, resulting in potentially incorrect data being stored on the Profile. 
The enhancement request is to make this an optinal feature when creating a source connector or dataflow. It could be a toggle. The trade-off would be increased processing time, but I would rather have correct profile data a bit slower, than fast updates that taht eventually prove incorrect