I'd be perfectly fine with the way they are now if throwing knifes with incendiary blade burned players 100% of the time, like they're supposed to. But they don't, in fact in my experience I'm lucky if they work properly 50% of the time. If one burn, that only lasts maybe 3-4 seconds with minimal DoT, doesn't work reliably, then why should something that lasts at least twice as long, with twice as much DoT, be any more reliable?