There is certainly no consensus on the matter right now, but the feeling is that
- Intrepid is the proper place to make such a replacement since the LTS was just released and there is enough time to work any kinks out.
- Empathy will probably be integrated at some point and Ubuntu should be on the leading edge of this (A.K.A. "It's a selling point).
- Empathy offers a much better path forward than Pidgin.
- Empathy offers voice/video right now, while Pidgin's has been promised for some time and is on an uncertain timeline.