I read all of them in translation when young and will try to get the Marples if and when I can. I know she herself got sick of Poirot as well, though yes, of course, I find all my romance and humour and humanity in mysteries (not as such but the few better books happen to fall into that genre where the non-genre stuff shines brightly as it doesn't in the genres where it should).
Satire today is what tragedy once used to be, at least that was one of if not the first papers I wrote about the theatre.