Not a bad Monday puzzle. I'm not terribly familiar with Yiddish loanwords, so the theme answers did not come immediately. Still, they are not completely foreign to me, so it wasn't a major stumbling block.
The fill was, I thought, very clean throughout. The only thing that seemed a little unnatural was EULOGIA (44D: Laudatory tributes upon someone's passing), and even that wasn't bad, because Eulogy is already kind of an odd word. LADE (19A: Put on Cargo) is pretty crosswordsy, but I'll let that pass, too. I've never heard of SENNA (67A: Medicinal plant), but instead of feeling like the constructor just jammed something in, I feel that I've learned a little something.
66A: Class struggle? (TEST) was a nice clue, and I'm sure that our frequent commenter Huygens will enjoy seeing CARL (32A: Astronomer Sagan) right in the middle of the grid. I also enjoyed the clue/answer pair 33D: End of a bridal path (ALTAR), and 54D: Nut with a cap (ACORN) is kind of cute.
If you were to ask me, I'd say it played more like a mid-week puzzle than a Monday (I'm looking at you, CODICIL!), but as far as I'm concerned, there's nothing wrong with that. Especially after last Monday!