I’m not sure valve really cares at this point. I think they still enjoy TF2, but I get the sense that they don’t really know what to do with it at this point and no one really wants to give it enough attention to figure out how to fix the problems it currently has, much less figure out how to expand the game further. Tbh it’s an old game, and they may even feel like they’ve programmed themselves into a corner, where any major changes would require reprogramming large parts of the game or even migrating the game to a newer version of source.

That said, I’ve signed it, or at least tried to sign it. It gave me an error about being blocked due to bot activity, though that might have been my fault. I hit the button and waited for a confirmation but nothing happened, so I hit it again, nothing happened, and then on the third try the site refreshed a couple times before telling me I’d been blocked.

However, hopefully it got through.