Stream -> pipeline And Input Extractor clarification

[piellick]

Looks similar to this post :

Message Processors Configuration

The ‘Pipeline Processor’ has to run after the ‘Message Filter Chain’ to be able to access fields created by extractors. This then forces a change in the OOTB processing order found in the ‘System / Configurations’. Any particular reasons why this OOTB setting was chosen instead of the other order ? By doing this order change configuration, am I losing/braking something else ?

If a use pipeline, i need to create “pipeline rules” to replace existing extractors … no ?