Hi loopyloo! Thanks for your kind comment! I'm so glad you enjoy the theme and mechanics!
Your question regarding Bitter Feud is valid, perhaps it would be better to change it from "all actions" to "each action" to avoid the possible misinterpretation you described (no.1 is correct, no.2 is wrong).
Vehemence is visually intuitive if you keep all captured Knights, Bishops and Queens on the same side of the Captured Pieces boxes, then you just have to count them.
Thanks again for taking the time to comment, very kind of you to do so! :D