Productions Performance

After using Productions since it launched, its been fascinating working through the ins and outs of it. Keeping project files relatively flat (just sequences) has helped, although we still get strange errors every now and than: random crashes, duplicate IDs, locked projects that need to be manually unlocked, footage that is being sourced to a "recovery" project instead of the original project from where it came from. I guess my question is, what has been everyone's set up in order to keep Productions stable and quick? Our shows are about 25-35 minutes long and I find that duplicating sequences for versioning within the project result in project bloat...making it longer to open up the project. Should we instead duplicate the actual project itself when versioning (resulting in many tiny Premiere projects)? In your experience, which method is best?