Why is is unfeasible that there is more than one Vanilla Town? Going by what Karifean has said in the OP, there are two Mafia. That leaves 7 town-aligned folk. I wouldn't be surprised at the revelation that more than one of them don't have a role. But why does that surprise you?
This is the second time though, AK, that you have casually jumped on a bandwagon. Yesterday your reasoning was for the lulz, and today your reasoning doesn't make sense. Interesting.