Covert support of opposition groups within Iran needs to be approached with care, as I mentioned in a different thread. Aside from the issue of legitimacy, there is also the hard fact that the Iranian opposition is not only fragmented, but there is a great deal of dissent on goals and approaches within and among the various opposition factions.

The son-of-shah is not exactly a disinterested speaker, but his support exists mainly in exile and he is only a figurehead for what is virtually the weakest faction in-country. As much as the vast majority of Iranians dislike Mullahcracy, they aren't exactly eager for a re-run of the Shah. Giving him much attention would simply be a repeat of the stupidity exhibited with Chalabi in the run-up to OIF.