I quite liked such an idea, but then I saw the spellbooks

I feel like this should also extend the collar of their shirts like the Silver Bullets does

Great idea but you might have to remake the the cross into a TF2 logo to avoid dumb religious controversy like what always happens with every game ever made like Zelda and Pokemon.
I don't hate your idea but i just wish people would cool down when it comes to religion and gamming.

.......................,,-~*~,,
......................./:.:.:.:.:.|
......................|;.;.;.;.;./
......................|.;.;.;.;.|
............._,,,,,_.).;.;.;.;.|
.........,,-":.:.:.:."~-,;.;.;.|
........(_,,,,---,,_:.:.);.;.;..",,
......,-":.:.:.:.:.""-,,/;.;.;.;.;.",
.....(:.__,,,,,,,,,___);.;.;.;.;.;|
...../"":.:.:.:.:.:.:¯""\;.;.;.;.;.,"
....\",__,,,,,,,,,,,__/;;;;;;;;;/\
.....\.::.:.:.:.:.:.:.;.);;;;;;;;;/:\
.......\,,,,,---~~~~;;;;;;;;,"::::\
.........."""~~--,,,,,,,,,,-"::::::::::\
...................\::::::::::::::::::::::
░░░░Add it now Valve!░░░
░░░░░░░░░░░░░░░░░░
░░░Because it's very░░░░
░█▀▀ ░█▀█ ░█ ░█▀▀ ░░
░█▀▀ ░█▀▀ ░█ ░█ ░░░░
░▀▀▀ ░▀ ░░░▀ ░▀▀▀ ░░
░░And give ME one too░░░