By now, don't you think people will have learned that Thou Shalt Not Fuck Around With Veronica Mars?
Seriously. People repeatedly try and "get" Veronica in all sorts of ways. They always go down. Why try?
Other than that, a pretty cool episode. Didn't really further the overall plot in any meaningful way, but did contain some bits of info that may be important to The Big Secret. Mostly bits "we" knew, but Veronica didn't.
I would care about the subplot if I cared about the Echolls family. I don't (except for Logan, obviously. He IS one of the best sorta-villains ever), so… not so much.