I saw Jerome not AW'd. I didn't need to continue looking. that's your answer.
edit: took a 2nd look. I'd say AW whatever units you use the most yourself. you can either AW utility units (Len, Shuuka, monica, cellia, katie etc. drop boosters are included here), or units like Horus, Shizuka, claudia, Lyla, Saki which is basically focusing on your duelist component which seems a bit weak aside from clissa. also max level elizabeth and claudia before anything else though.