here is my solution:
Create an email action in LCP and use the parameter for context or list in subject.
Then send ist to your todo mail adr.
Disadvantage: You have to press the "send" butten
As an avid user of both Launch Center Pro, Drafts and Todo 7 on iPad - i would REALLY love to see this capability added to via x-callback-url for Task Creation. Please. Please. Please!