Mirri, swap pulses for o-rings. Those will help out show & tell shenanigans.
Nevertheless, the misers hymn and crusader are doing you no good at all.
There was a time when I was playing this deck, I used to run bitterblossom main deck (maybe that's where I got more value at the therapies), as well as an ajani.
Another thing you might want to try is a 2-of (or maybe 3) hero of bladehold. It DOES make jund and most bug decks cry.

Also, I disagree on your opinion about knight. I'm still playing it and it seldom lets me down.