Caught that scene the other day and it's so rough to watch. Ewan standing there on an empty sound stage, walking around and talking to himself, looking at a million clones that don't exist, trying to sell it.
Beyond that, the whole premise still doesn't make sense. Sifo-Dyas goes and orders a whole clone army a decade before and they just do it? Did he pay them all in advance for the creation, training, feeding, and housing of millions of troopers? Did they even question for a moment why they have had no contact and provided no progress reports for years and years? And they don't catch on to the fact that Obi Wan has NO IDEA what they're talking about through his whole orientation.
And who is Sifo-Dyas? I mean... I know who he is because I'm a super nerd, but why is this all tied up with a Jedi whose name we've never heard before? Where was even the mention of him or Kamino or the possibility of a clone army in Episode I (you know the answer to that, I'm sure)?
They also say it's one of the finest clone armies they've ever created. Who the hell else is buying millions of clone soldiers? They're members of the Galactic Republic, and they can create whole armies for highest bidders?
It's so remarkable that the clones and even the Kaminoans are so interesting and awesome in the Clone Wars, with such great personality and backstory.