Awwwe! I wish I could have a snake. They seem like really cool pets. Do you take them to show kids at school, or were you just saying that as an example?
I'd love to have a boa. Of all snakes I've ever been interested (short list, but still..) boas have been the top on my list. They seem like a teddy bear almost 
I've never heard of a scrub or a rock python.
It seems like the smaller ones all except for one are moody.
I love her colors. I think those are the prettiest I've seen on any snake. In that second picture, how's she's looking up at the camera makes her looks so innocent. Its too cute 
snakes are good pets depending on what you want in a pet, the biggest critique i get about keeping them is "they don't do anything" which is true, they like sleeping, eating and exploring. They aren't particularly social and they don't do tricks but i sort of accept those facts about them (it's why i have ferrets and a dog).
boas are great pets, I used to keep one here and he was a gem for temperament. The bigger specimens at work are also good and friendly and even some babies are handleable (others keep me on my toes). I 100% recommend them as a large pet snake since the average size is 8-10ft (which can be done by a single person), they're super tame-boa is i am informed translated as "good", they are also fairly resilient and they can be fed jumbo sized rats as adults (whereas large pythons and anaconda's move on to rabbits and piglets).
Boas are also fairly cheap on the market because they're always popular and hence are bred often in captivity.
Scrub Python:

African Rock Python:

haha i missed a few smaller species off that list but your analysis is correct most species of small python are very prone to strike at humans, but if they didn't have that attitude they'd probably be extinct in the wild. Only reason the royals do so well as wild animals is because they are nocturnal and curl into a ball at the first sign of danger. Woma's are australian and live 90% of their lives in burrows so they don't really need to be defensive.
I guess for things like Carpets or Olive pythons when you don't have the mass to be imposing, the venom to be lethal or the life style to hide then "little man syndrome" is the best bet.
It's hard to believe she's gonna be 18ft or more some day she's so tiny and she's adorable to look at. She has good colours but the beauty of designer snakes is that there are always new ones out there some of the specimens i'm after next year will be nice too although i don't think i'll ever get over the colours of this little lady.
haha as i said she's really calm, she's as innocent as a snake gets when my hand is in the tank she doesn't think she's being fed and she doesn't get defensive which makes her the only one in my collection at this point that is like that.
and yes me and my large burmese have done 2 school shows together, we generally don't but i have a lot of reptile keeping friends and sometimes they want to do something like a show somewhere and none of them are willing to dedicate as much as i do to a potentially lethal species of python so they give me a call...it's not like i'm some random guy who bought a baby to seem cool, i've been keeping these guys since i was 4 years old (15 years since i started) and i have an Advanced National Diploma in animal management (and soon one in herpetology-the study of reptiles).
but yeah before i get too distracted he's been to shows, he's a gentle giant and the sound of 20+ kids going "WOW" at the same time is kinda cool too.