I figure that Timon is basically dogmeat at this point in the story. If he's lucky, Servilia will forget that he exists (or be killed before she can do anything about it), but he's probably not that lucky.

I'm sure you're right about Vorenus and Vorena. I like how much she's like Niobe, actually, both in looks and in her demeanor.

I guess the drug excesses are meant to mirror Atia's madness for sex in some way

Oh! Somehow I had missed that completely, but it makes a great deal of sense.