Wow, great conversation.
I'm a launch manager and I always say to clients that there are really two launches: one to the prospects and the other one to the JVs! And in that sense, it's old school marketing...AIDA, just like you say.
The Attention part is the biggie for me. How do I get their attention? Do something different. I'm thinking, everyone is asking for or offering the JV xyz ...so I won't lead with that. Instead, I'll lead with, "Hey, what we'd like to do is build YOU a list with our content!"
Also, I find design is a big deal: that gets attention. Website and graphics, banners, ...otherwise you are dead in the water.
Email is the worst way to make content. Video isn't that great either. Phone is good but you need to have your ducks in a row and resist the temptation to sell ...as opposed to connect. Connect in some way and you will feel good when you get off the phone.
But, if you really want to get their attention, send them traffic. Yum.
Other ways....RT their tweets. Tweet their content. Write a review of their stuff on your site and give them link love with keyword loaded anchor text ...not an affiliate link.
Be nice. Be genuine. And stick by them for at least 6 months, maybe more... You have to prove your loyalty beyond doubt.
Best,
Oliver