Wordpress Lead Capture Plugin

Need to create a Lead Capture Plugin that will integrate with the following Email Service providers. 1. Aweber 2. MailChimp 3. iContact 4. GetResponse 5. Constant Contact 6. 1Shopping Cart 7. InfusionSoft 8. Office AutoPilot 9. Any HTML from other providers. I have a plugin that already has all the above integrations, so I can give that as a base for you to start with. but, we need to develop a completely redesigned backend and a completely new design. I will give you the layouts that we need the plugin to look like. The plugin will need some drag and drop features. So, you must know how to do them in the back end or front end of Wordpress. APPLY ONLY, If you have experience developing wordpress plugins. Also, we need to have some kind of authorization built in, so that people don't steal the plugin. Send me some links of plugins that you have developed before for wordpress platform