I'm on the fence about product consistency.
The variations in Germain's products obviously doesn't effect their sales, and I'll argue that it might increase them. They aren't churning out tobacco Budweiser-style (high quality, low flavor, extraordinary consistency), it's more like they are preparing a great meal in a small restaurant. It's part of what people find alluring: hand-made, limited quantities, high grade leaf, fabulous old backstory, reclusive company that doesn't bullshit customers or strive for the LCD of approval. Part of the proof of that persona for consumers are the minor inconsistencies. It's always good, it's just not always the same good. I miss that in a lot of products. Remember when you could buy bread in the supermarket that wasn't a clone of every other loaf on the shelf? Remember when milk would taste different carton to carton, season to season? We live in a world that has become so damned homogenized that we're chastised if we don't talk alike, think alike, vote alike and agree that the King's new duds are just simply fabulous.
The great British beer critic Michael Jackson once told me that consistency is the enemy of interesting. I'm inclined to agree with him.