From the "All Things Philosophical" Board, I can't believe I didn't notice this.
Harmony vs. Tamika does read rather nicely as a sendup of Angel vs. Spike. I just wish it had been a little bit clearer in the text - I would have actually noticed it.
In this episode Harmony's job is revealed to consist of constantly working to please bosses that (to her) seem arbitrary, cold, distant, and capricious. In some ways in this episode Angel reflects what the powers must seem like to him. Harmony works at her job and gets a nice desk and some perks, but for it is ostracized by everyone around her. But despite that another vampire struggles to take the position based on who "deserves it more".
Harmony vs. Tamika does read rather nicely as a sendup of Angel vs. Spike. I just wish it had been a little bit clearer in the text - I would have actually noticed it.