So ... did I get this right, first you get close to your enemy to light him with your flame thrower ... (this far I have no concerns) and then you get EVEN CLOSER to them in order to knock them silly with a fireaxe (that has some red duct tape attached to it) which includes precious "weapon change"-time as well as removing your advantage of being to far to be hit in melee combat and to close to be hit by a gun.
Is it just me or is this a rather useless implementation?
Oh and, before I forget this: it only works when your enemy is on fire, otherwise it deals even less damage than an axe without duct tape.
Tbh. this sound like giving the spy a constantly ringing alarm clock to prevent his footsteps being heard by enemies.