drazen,
i proposed this many times this particular concept and i was only attacked
is that only because RG posted it?
Of course not
What Priyanka showed with this is not playing concept. It is just starting point for better understanding of it. There are still few things which must be involved here before we can figure it out.
Priyanka is also not applying heavy progressions like you were, and I think that would be the main objection from what you advocated. Your betselection in particular is not worse then any other with such odds but applying martingale on it is what shouldnt be done.