It seems that everyone is expecting a grand showdown, in typical
fashion, where there's supposed to be a "climax."  Frankly, that's not
how the real world works.  Also, wouldn't it be even more boring if
Heller uses this kind of formula? 

I did have such hopes but not
as "hyped up" as many.  I also firmly believe Heller's way of doing
this is to let us keep following the development as 2 years ahead where
Jane is having a new life will look back & bring back subtle &
little clues & episode by episode answer the unanswered questions.

Like 1 fan said here, Jane coolly negated the "God's play" that RJ tried to pull on him. 

So, if you put all "your own expectations" aside, & watch S06e08, you'll see it's NOT a grand finale or end of it.  Heller wants to use the remaining 16 or so episodes to really bring out who RJ really was. 

Think about it, how can RJ & the missing links be explained in just 1 episode??

I'd wait till the season finale (e23?) before making a conclusion on this.