I can only comment on my experiences with Kipawa, my first basenji, who is just shy of 2 years old.
1. OBS #1: they were only affectionate on their terms and didnt like to be petted or picked up.Is this more common than not. They wanted to be by you, but hands off for the most part.
2. OBS#2: Off the leash - they are unpredictable and may not come when called. Had some wild roaming experiences at the off-leash beach. Always kept treats -and 95% of the timeit worked.Can you train them to counter this? or is this a stretch ?
3. OBS#3: Not snuggly
4. OBS#4: Only looked me in the eye when I had food- everything was a distraction.
1. Kipawa is just an extremely affectionate dog. His affection for me is special, but he recognizes all family members and care aides who come into the house and enjoys their attention and gives it back. He loves being petted and adores being massaged, but has a preference for it being from someone in his 'pack' (family members and care aides). He will tolerate being picked up by anyone, but prefers it when I do it. He is a little uncomfortable when turned on his back, however, we practice this quite a bit and he's getting better at it, especially if tummy rubs are included.
2. The only areas Kipawa is off leash is in our backyard or dog parks that are fully fenced. For these places, he is predictable, because he is very used to them. He usually comes when called, but if it doesn't work, I carry the squeaker part of a squeaker toy with me, and that most always brings him back. If he needs to come to me based on an emergency situation (say he got onto a street by accident), I have a word/sound that I only use in emergency situations. He is excellent at responding to that. All this said, if he spotted a bunny in the dog park, I don't think the emergency recall would work. Based on his breeders seeing him this summer, they have indicated he has a very high prey drive.
3. Kipawa is super snuggly all the time and is also a 'velcro dog'. We are tightly bonded. He is on my lap when I watch TV, or at least laying against me. He sleeps under the blankets on my side of the bed.
4. He easily looks me in the eye. If I am talking to him, we have full eye contact. He enjoys when we give each other 'soft eyes' - the slow blinking a person/dog might do when fully relaxed or before settling down for a nap. If he is distracted (only happens outside) I use the command 'watch me' to get eye contact. Usually 95% success rate, but that would go down to zero should he see a bunny.
I can't answer your other questions. Kipawa will be a solo dog in our home. As for the breeders, his breeders were Therese and Kevin Leimback (FoPaws Basenjis) from Washington state. We researched for a year before selecting them. Their breeding program concentrates a great deal on temperament.
Hope this helps.