I am too willing to throw my coin into the development of synced tabs within Tabs Outliner. Remember the IndieGoGo? The whole-world kickstarter alternative? If you would throw a campaing with the amount of money you want from us to develop this and would just post the campaing here, you can be sure we would sum up to your requirement. IndieGoGo has an option for projects - that you will receive money even if you won't reach your goal. This is a win situation for you. Consider it.