Call and share -2

Hello, I want you to create a desktop software like skype. But the working is different, please read the description below. And I am not awarding project within minutes, so please take some time and create a blueprint/roadmap of the project and explain how will you go forward. 1] It will be a desktop application. 2] It will have the functions to do an audio call to each other(like skype) and share your computer screen with the person or group of persons you want.(like hangout) 3] You will need to register and login(like skype) 4] Send/accept fried requests/chatbox(like skype) 5] It will have options to call and share screen with others. You can do a call or accept/reject call from person at other end. 6] You can share with individual or can create a group , you will share screen and once the user at other end accepts it, a window like skype video call will pop-up and you can see the shared screen. This will be seen on screen of every member in a group. The person whoever has created this temporary share screen session will be the admin for this session, he will have the rights to add/disconnect others. Most importantly this screen shared must be the live screen reflecting the activities on the screen to other members, and once admin disconnects it, the session must be destroyed. 7] Screen share and voice call must work together, meaning when I can call someone and share my screen with him/her. - it should have an option to send smaller files as an attachments and after certain period of time those attachments will be deleted. Please provide your skype ids, so that I can communicate with you. Please note that - Calls will be the audio calls only. So you will need speaker and mike, no need of webcam.