I guess a long time ago, in a galaxy far, far away, they have never heard of the old chestnut "Innocent Until Proven Guilty". Or any rudimentary aspects of basic jurisprudence for that matter.
Because apparently if you are arrested somewhere, like a warehouse, and there is illegal stuff in there, like NanoDroids, then it's so obviously YOURS. Don't bother checking ownership of the warehouse in question, or shipping manifests, electronic communications, etc.
All those dead clones? Well, don't bother checking the security tapes. Why even have video cameras in a prison right? Unless they're in the cell of the prisoners? Of course those cameras cannot have functioning audio.
I mean, is this the worst, sloppiest, most half-assed frame job EVER? You bet. But apparently it was enough to completely confound the jedi council and the top-echelon miltary officer assigned to prosecute the case.
The whole arc was just nonsensical. Lots of enjoyable chases, battles, etc full of sound and fury that ultimately signified nothing. Even Ahsoka's departure from the order was muted and empty because of her remark about "how can I trust myself?" or whatever. Should have been more like "how can I serve an order that does not trust or respect me"?
If the goal was to move Anakin closer to the events of ROTS, they accomplished that at least. The distrust of the council is now established. He had a nice little dark side moment in the duel with Barriss too. Again though, plausability - a padawan going toe-to-toe in lightsaber duel with the Chosen One? How and where did she acquire all these fantastic skills, like being able to force choke people from miles away and whatnot?
Agree 100% that Luminara was a glaring omission from this arc. Even a cameo would have added a lot, IMO.
And yeah the comment about Ventress' sabers suiting her was completely out of character with what she says later. Just bad writing. (What happened to those things anyway?)
I still want those Jedi Temple Guards, worthless as they turned out to be.