This is kind of the story behind RemoteTogether for anyone interested!
E.g. we have an aggregator for remote workers. We will gather contracts for you, help with book keeping, have a project manager and corresponding tools prepared (issue tracker, wiki, chat channels) etc. To not make it an ad, I won't say our name. But I just want to show you that people already spend a lot of effort in that area. Certainly the demands we have working remotely are not all met already. But right now it's hard to see what makes your site interesting.