I'm sorry I'm coming to this conversation rather late in the day, but I wonder whether there has been any thought given to moving fixtures from core Rails into a plugin? I know that a lot of developers (including me) don't use them in their tests any more - preferring instead to use mocking in unit tests that don't touch the database in combination with integration tests that do touch the database and explicitly call ActiveRecord create!, etc, to insert data. I only mention the idea because seems to fit with the philosophy of moving stuff out into plugins. Anyway, just a thought.
As someone who uses fixtures each and every day, I have no interest in
seeing this happen
Having said that, if fixtures are somehow getting in the way for those of you who *don't* use them, we could take patches to clean that up.