Snape's Potions and the Downfall of LV

[Tonks]

No: HPFGUIDX 150224

I have been thinking about Snape's skill at potions. It has been 
suggested that potions genius Snape would have been used by LV in 
much the same way as the German scientist were used by Hitler.  I 
think that there are many deliberate parallels in JKR's work between 
the DE and the Nazi SS.  (This may be a forbidden topic, if so 
forgive me elves.)

Keeping in mind Snape's great ability in potions, I am wondering if 
maybe what we have always been lead to believe about why Snape never 
got the DADA job was just a smoke screen.  Maybe Snape has been 
doing some potions work for DD all of these years and now the summer 
of HBP he was successful.  So now he doesn't need to hide in the 
dungeon anymore.  Think about it, we are lead to believe that DD 
wanted Slughorn in that position to protect him and to get the 
memory out of him. But did DD really need that memory?  DD was 
already looking for and found a horcrux, so he already knew about 
what LV did. Maybe Snape has a secret brew of ???  for LV, to aid in 
his downfall. Maybe for Harry to help him survive.  Or ???   Are we 
going to see a special potion in book 7?  One that will help Harry 
overcome LV?  Maybe something that Lily was working on that Snape 
took over and now has succeeded in making.  I am probably wrong, but 
I will just fall off my chair if I am right.

Tonks_op