Forget British, I'm suddenly seeing the Batfamily cast as The Brothers Karamazov! It's even more fascinating with Bruce currently dead! You'd have to rearrange the birth order a bit, since Dick = Alyosha, Jason = Dmitri and Tim = Ivan. Alfred is an absolutely perfect fit for Gregory. The only question is who would be Smerdyakov? Oh, fuck! Damian is Smerdyakov! (maybe with shades of Ilyusha?)
though trying to shoehorn Bab as Katerina and Selina as Grushenka only works superficially it's really not a good fit at all also we need a Zosima, the whole thing falls apart without a Zosima