I am not familiar with TF2, but Pyros' mask looks like a classic gas mask, so it could be useful for many different occasions. I put it on my list.
But Scout's hat looks like a regular black cap, and that's already in the SP-Studio. I am not sure about the one sided headset... It looks kinda strange.
A weapons update is already on my list, so when it comes to this I will remember to check out TF2.