Tycho, Artoo couldn't even be bothered to pilot the Jedi lightsaber ship properly, couldn't be bothered to look out for pirates, and it eventually cost the Jedi a ship nearly as old as the Republic itself - that really bothered me. R2 should be fallible, he shows mistakes in the OT, but holy crap he shouldn't wipe out a precious relic either. Of course, nobody should have expected the ship to run with NO CREW either though.
This week's Clone Wars did nothing for me, it wasn't a character-driven episode, things merely "happened" to get the kiddies off Florrum. There was no wizardly Jedi creativity, none of the kids' characters did anything to help or hamper the story, even Katooni's saber assembly was merely going through the motions, there was no more time for struggle or storytelling it seemed. Huyang played only the C-3PO role, no longer clever and wise and mysterious until one comment at the end about Yoda. Grievous is merely the Deus ex Machina that sets the plot in motion, there's no reason for him being there at that time, and it doesn't even jive with last week's episode where during these events he was engaging and then running from Obi-Wan's flagship.
As for Hondo, they overplayed him here switching sides to be arbitrary - perhaps this was meant to feel like Cap'n Jack Sparrow's unpredictability but the writing lacks the nuance required to sell that.
Ahsoka vs. Grievous pt 2 was way too easy for Ahsoka to hold her own, but that's a failing of EVERY saberwielder on this show the last few seasons where it's a sliding scale of ability based on the script's needs. At first it seemed like Grievous was limited to only 2 lightsabers which could have justified the balance shift - they showed him pulling 2 sabers off his waist, but then they cut away and he's got 4 and it's ridiculous.
I didn't hate this episode, but it didn't really work as a story, and it wasn't very well-thought-out or polished, so it was just "a thing that happened".