Hello.
I wudl like suggest that Orca enable all variant voices of espeak-ng for default. This is achevied editing the conf file in: "/etc/speechdistpacher/modules/espeak-ng.conf" and change the line "EspeakListVoiceVariant 0" for "EspeakListVoiceVariants 1". I think this is most easy for the users and is a litle change for the developers.
To day, in "person" dialog, Orca show diferent accent (no person): american english and british english, spain spanich and latin american spanish etc, but don't show espeak-ng person like: Andrea, Michael, Pablo, Max etc (they are person). If Orca include all variant for default, "person" dialog going to be most coherent too.
best regards.