Too much to expect consistency from these writers, but that's what happens when they struggle to find anything for their characters to do. No surprise there actually, it was only a matter of when they would ruin them.
There's really nothing left to buzz about, this show has exhausted pretty much everything at this point: Emily went back to being Amanda and exposed herself to the public, her dad is alive and cleared, most of the Graysons are dead and the revenge is barely existent (at least to drag it out any further), etc. They tried to pull it with the David Clarke thing and that did not work, none of the desperate plot twists are working. The only thing they can and should do is end it and not drag it out anymore.
Dropped plot points are the writers' go to response for everything. As for Louise, she is pointless, her storyline is disconnected from everything else and it dragged nolan down with her and her useless family drama.
Unfortunately.