Maybe it's because I find her development okay, as opposed to atrocious in the way that Pierrot's described it. Honestly, though, she was meant to be a framing device from the start. So long as the following episodes provide their own fair share of interesting scenarios that can work together with developing the L.Y.A. case, that'll be darn good enough. TMS really fucked this series over by not giving it enough of a budget and enough time to finish pre-production effectively, and the fact that you can only develop Fujiko so much is an issue too. But then I remind myself that it could be a lot worse, because the whole series so far has been balancing the main arc with the episodic backbone fairly-well.
I still like it, although it is a glaring point that the titular character is probably the least interesting. I mean people seem to dig Oscar, and he/she hasn't really had that much screen-time throughout the series.
And I agree with Mad Pierrot that there seems to be more suggested by the OP, but in fairness starting with episode 8 it looked to be at least tapping into that somewhat.