I think it is time to think about buying a new phone. My crieria:
(1) works on Sprint network, but should also work if I change carriers;
(2) easily rootable, supported by popular #Android forks and #F-Droid;
(3) large, bright, responsive screen;
(4) good battery life (replaceable battery preferred);
(5) real headphone jack and working Bluetooth / Bluetoot_LE;
(6) available protective case & screen protector.
I'm sure that #Daddy_A and @amic will think of something I missed, but for now, I'm posting this this #lazyFed request.