Indeeeed. Finding a balance between the flamethrower and backburner just got much more difficult. In ways, the learning curve got a bit steeper too with the backburner.
Imagine the fear it would instill to hear a heavy go "I'm comin to get you sucka". Even scarier than hearing "Spy's sappin muh sentry" in the middle of heated combat.
Seconded. A one-shot bat would be nice for me, because I play scout a lot (just poorly right now), but if I ever play something else, I can't wait to be peppered with bats in a multi-scout pack.
Also a good tactic xD