Heroes: Its Own Worst Enemy?

So, I've tried to get back into Heroes this season and it's just not clicking for me.

I don't buy Nathan's religious conversion.

I don't buy how stupid Hiro is acting.

I don't get how Linderman is alive/not alive/manipulating people.

I don't know why TPTB are already recycling superpowers (Isaac's future-via-painting, for example).

I don't like the new Not-Niki.

I can't buy Sylar-as-Petrelli-sibling OR HRG partner.

I hate the whole Mohinder-fly plot.

I'm not interested in the villains.

Season 1, I couldn't get enough of this show. Season 2 was a real struggle, thanks in large part to the writers strike. Now...I think it suffers from trying to continually be on the cutting edge, endeavoring to top itself, and mostly it's just leaping over sharks.

Sad.