SRT, although it doesn't work so well in the deep bush that you are describing, in Botswana, the caravan has no issues.
Most loads will not be bigger than 10 or 12 people. It is quick and easy to load and unload, with a large enough cabin to keep most people comfortable in the hour or so hops.
Easily converted to a freight config and easily deals with the strips that we fly into and out of.
So while it might not be a perfect bush plane, it has been adapted to this role pretty easily.
@ Cc, Its all well and good having a field to go to after takeoff, but in this strip, there are very few options available to you.
Plus you have to be able to reach them, specially if that crazy rumour of someone jumping out midflight. Would turn the glide characteristics akin to that of a brick.