What about the Gangrel? Their discipline (I forget it's name) goes something like this: your eyes glow red, you grow claws, you turn into a wolf, bat or mist, earthmeld, earthmeld swimming, and then you can controll your inner beast. How does that follow a progression? It's just as bad as serpentis, if not worse.
I don't think disciplines were supposed to follow a progression. If they were then disciplines like serpentis and Gangrel discipline (again, I forget the name) would never have been written.
Let's assume that they should, though...
Dementation follows a progression thusly: (1)I can change your mood, (2)I can make you a little insane, (3)I can make you a more insane, (4)I can make you more insane for a longer period of time, and (5) I can make groups of people insane for a longer period of time.
The reason the insanity is usually picked at random is to make it fair for all playing. If you made somebody insane and it was up to you to tell them what insanity they are getting you could simply say, "suicidal". If it were up to them, they could say, "penacletaphobia" (sp?), or the intense fear of getting peanut butter stuck to the roof of your mouth (yes, it's a real phobia). An ST can pick it, but to keep it fair and keep things running smoothly the insanity is picked at random.
As for there being no vampires in India, that is simply incorrect.
http://www.shroudeater.com/vampp.htm quotes many names for vampires in India, as follows:
According to the book, "The Vampire Encyclopedia" by Matthew Bunson, vampires in India are called 'PACU-PATI'
According to the book, "Vampires and Vampirism" by Dudley Wright vampires in India are called, 'PACUPATI' (obviously another western translation of the same indian word)
According to the book, "On the Vampire" by Ernest Jones, another word for vampire is 'PANANGGALN'.
I digress. The list goes on. Check the website. If there is no vampire myth in India then why do they have so many names for them?
I don't see any middle eastern countries on the list and I can't find any online sources to confirm the existance of such a mythology.
The Assamites are inspired by the Hashishians who were an aincient Arabic clan of assassins. I'd liken them to an Arabic King Arthur and Camelot. If you have some spare reading time I'd recommend looking them up. Fascinating mythology, and it is incredably important if you want to understand the modern muslim militant Jihad (I'll stop before this turns into a rant on Freud, Jueng and mythology).
Honestly, it seems to me that you're just paying lip service to vampire mythology but you really don't care much about it. If you did care you'd have known more about vampire mythology and you wouldn't just be 'guessing' that Trukey has vampire myths.
I think that taking out the clans you propose would seriously hurt the anarchs.
Look, it's your game. You don't have to rationalise yourself to me if you don't want to. You want to get rid of something because it will help you tell a better story then go for it. I'll still play.