Josh,
The rationale behind this request is to try to take advantage of Marketo's landing page and form strengths to display a call script that an inside sales rep could use. When you think of an outbound prospecting call it is serving a similar purpose to an inbound landing page -- i.e. convincing the prospect to commit to take the next step (i.e. convert). Marketo does not do a very good job dealing with outbound cold call prospecting campaigns, so our thought is to make our outbound cold call camaigns look more like something Marketo deals with well, such as landing pages. This allows us to leverage the existing capabilities in Marketo such as A/B testing different "call scripts" (landing page) to pick winners, allowing rep to quickly enter data about a lead gleaned in response to the call, allowing less-technical users to easily modify the script (landing page), automatically displaying different content snippets in the "call script" (landing page) based on lead segmentation by industry or other lead criteria (e.g. technology type or geography), tying specific call scripts to a lead's program status, and more.
Perhaps we should look at RTP or another API but at that point we're rolling our own inside our CMS rather than utilizng the native tools of Marketo which is the goal we had in mind for this exercise.