Yes I think it's pretty stupid not to create a lobby-system or a dedicated server...
Anyway, I thought up another idea, which is not really good but I think it's good enough to test

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I thought it would be nice to have some sort of website where you can add your IP address & status stuff to create some kind of lobby-system, with the only downside is that you have to manually enter things.
My idea was to create a main page with all games (from the last XX minutes/hours), then you click on 'start hosting' or something like that, then a popup opens where you can enter basic stuff (server name, ip, max. players, map name, status) then hit start and then you keep the popup opened, so that when somebody joins you add a player to the 'current players' list, hit update and its ready again.
I know it's not quite what we need, but if you guys think it's a good idea, I can create something like this

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Check out some concept ideas I have .
Please let me know what you think!