Hi, 
I've presented the third feature in the user group.

I'll try to clarify what I've meant.

A destructive operation is any operation which would break backward 
compatibility with a previous version of the application.
I proposed implementing the ability to have  multiple south  migration 
sequences mapped to multiple south tables in the database.
And having the ability to indicate to which migration sequence I'm adding the 
migration via the cli
for example two migration sequences :
1. Additive: new tables, columns
2. Destructive: delete tables, columns , migrate data to new scheme.

This feature could also be of value when migrating a model between diango apps.

Erik.

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