Why have Obi-Wan In the room?
I know the PT Jedi are a bit stupid but aren't we supposed to be correcting that?
The mock-up was originally for a coda to Episode One.
Sidious pulls him out of the pit (to be the source of the clones) but he switches sides and becomes mysterious cyborg General guy (who claims he wants to kill the Chancellor/Sith Lord for setting him up for a fall).
You could insert a line into Episode Two about the first template being too difficult to control.