There are TONS of issues this season but it's still entertaining. Off the top of my head:
Raylan and Boyd aren't interacting.
Where's Art?
Where's Wynn? They made him a regular this season; could've fooled me.
Where's Tim?
Where's Rachel?
I miss Winona. (ymmv)
Ava's storyline couldn't be less interesting.
Michael Rapaport is not convincing anyone.
The Crowes aren't fit to shine the shoes of any previous "big bads." Dewey started the only interesting one and he's remained the only interesting one. He's a joke character at best, though.
The plot is meandering, too many pieces are too far from each other. What's the end game? Do we care? Is there one?
The whip-smart dialogue and banter is suffering because the pieces are spread so thin.
ETC
There are only 5 episodes left this season; a lot has to go right to salvage it. This show has been among my favorites each year, maybe even in my top 10 all time. Maybe even higher! S2? Mags? Some of the best TV of all time. Quarles? Come ON. My expectations, week to week, are sky-high. Not everything can maintain that level of quality; this show did for 4 seasons. I'm not writing off S5 as a misstep, but it's hard for it to feel like anything other than one at this point. I believe, Justified, always have; always will. Not going anywhere... but you're better than this.