With some well placed removal of your own (and its not as if I'd ever NOT run a fuckton of removal, its how I win drafts), if you get them into topdeck mode while you beat face with the ghoul (it's not uncommon), you'd be surprised what they'd waste on it.
And yes, one would have better cards than Warpath Ghoul. But I would still run it if I ran black, in addition to those other cards. For its cost, it's still a good beater, despite being vanilla. If you can throw some evasion on it, even better.
Saying "it trades with worse creatures" isn't really a good argument, since a couple of the other creatures in your list (Bats, Child) do also. Also nobody blocks early on anyways.
And yes, one would have better cards than Warpath Ghoul. But I would still run it if I ran black, in addition to those other cards. For its cost, it's still a good beater, despite being vanilla. If you can throw some evasion on it, even better.
Saying "it trades with worse creatures" isn't really a good argument, since a couple of the other creatures in your list (Bats, Child) do also. Also nobody blocks early on anyways.