I agree with many of your exclusions, but some of them sound really nice (e.g. DC) so it would be a loss to exclude them.
I checked all voice files, here is my rating of the voices you excluded:
AC low
AD good
AE low
AF low
CA low
CB low
CC low
CD low
CF medium
CG low
DC good
DD good
DE good
EA low
EB medium
EC good
ED medium
EE low
EF low
EG medium
ER medium
ES low
ET low
EU low
EV medium
EW low
EX medium
EY low
MA low
MB low
MC low
MD medium
ME good
MF low
MG medium
PA good
WA low
WB medium
WC low
WD low
WE low
WF low
WG low
WH medium
WI medium
WQ low
WR medium
WS medium
WT medium
WU medium
WV good
WW low
WX medium
WY good
WZ good
XC low
XD medium
ZA low
ZB medium
ZC low |
I attacked a zip with two files:
VoiceSetExclusions/just-good/VoiceSetExclusions.dat excludes 50 voices (with my personal rating of low or medium)
VoiceSetExclusions/with-medium/VoiceSetExclusions.dat excludes 31 voices (with my personal rating of low)
For comparison: You excluded 60 voices, I consider 10 of them as good.
All others generally sound "good" for me, but for my own setup I excluded KC for his exaggerated pronunciation of 3 as Tree. Even if technically correct I just don't like to hear it that strong (and that often, as he is very active in the regions I fly).
What I noticed when listening to the voices is, that many female voices do not sound good. Somehow like recordings of male speakers, already downsampled to 8bit/11025Hz have been altered to sound female, and thus adding sound artifacts.