I use Traffic Geyser and it is an awesome software. I don't mind the monthly fee of $97 because I use their service to promote videos for my clients and it pays for itself over and over again. Nick, I would recommend giving Traffic Geyser a test run if you have not done so yet. That way you can get some good ideas and make what they have better. I think you can get a 30 day trial for $1. If you don't want to do that I could probably upload a video of me using the software so you can get a feel for it.
I like the ideas some other posters have mentioned.
My top 3 would be...
1. auto sign up and register to accounts
2. ability to add our own sites
3. tracking functionality on ALL videos and sites
I would be interested in this product if you decide to go for it. It would be the steal of the century if you offered this for $30...you could charge 10-20 times that. Consider this, Traffic Geyser just added a business plan for $245 a month.
Keep us posted...