I am thinking of a site like omegle or chatroulette.
Where user can video chat live and also can give each other Bitcoins at the same time. That user can withdraw anytime without fees, No restrictions. (min 5000 satoshi - Max no limit)
Tell me if that would be a good idea?
This is no different in the forum, where chatting except video chat. only few people will actually do video chat as it defeats the purpose of anonymity.
it is a good idea but in the end how successful it can be will be up to the developers of the project, i have seen many similar project that started with a good idea but after a while they had no idea how to move forward and expand their project and they eventually died after a while.
marketing always matter though. no matter how good the devs and the sites functionality if no users use the site, it will still be a failure.