I see no point in having features in a website that you could have in the frontend of the game itself.
What would be useful is having it in both places, so you can check your ranks/standings from a mobile device/@work
While having in both would be a great idea. Having those features in the game itself won't be as flexible as running them in a website. Not to mention a website bring people/community together more.
yeah I understand MI. But by having game features in third party you are losing potential usage. I don't think TUS will die, and if it does it won't be because of 4.0. or Steam. But do not worry. I mean, there's no reason why if per example 4.0 comes with a map database people could still use TUS because it has richer features and is updated more often, or who knows, TUS could be WA's map repository.
There's too many uncertainties at this point to know how 4.0 will affect TUS, but I'm certain of one thing. 4.0 will be an improvement for WA even if it hinders TUS current status.