Try out those (at your own risk):
Immortal Search: http://s7vx6ciqnunjdkgmi4wdkh6rkmi3ymn557ohs2migqghkup75pslityd.onion
Torch!: http://torchdeedp3i2jigzjdmfpn5ttjhthh5wbmda2rr3jvqjg5p77c54dqd.onion
Ahmia: http://juhanurmihxlp77nkq76byazcldy2hlmovfu2epvl5ankdibsot4csyd.onion
Excavator: http://2fd6cemt4gmccflhm6imvdfvli3nf7zn6rfrwpsy7uhxrgbypvwf5fad.onion
VormWeb: http://volkancfgpi4c7ghph6id2t7vcntenuly66qjt6oedwtjmyj4tkk5oqd.onion
TorDex: http://tordexu73joywapk2txdr54jed4imqledpcvcuf75qsas2gwdgksvnyd.onion
It seems to me that there will be much less relays than there are AP nodes. Users won't publish/subscribe to hundred of relays (if they did, relays would not scale). Hence more bad content to less moderators, and poor moderation.
Adding client filters would just shift the censorship power to those maintaining them.