We only provide basic configuration as a service which likely would not cover what you're needing. We've worked personally with Jacob at
www.idlwebinc.com/services/joomla-services
a few times though and can recommend him, but we don't have a list of developers or anything of the sort. Beyond that you'd need to use various freelance sites like Upwork, Toptal, Remoteok, etc..
We'll be addressing the complexity in the future. The idea is to have the backend split into 2 modes. A basic and an advanced. This would show/hide large chunks of parameters to allow a more simplified configuration of CB and hide away the more complex parameters in Basic. In addition to this we want to greatly expand CB Quickstart to be able to provide a large amount of pre-built sites out of the box. Aside from that there will also just be general UX improvements with better parameter names, descriptions, and placed in maybe better locations. The idea is to get this going for CB 3.0 since we need to improve core APIs before we can do any of this. These are all just in the idea phase though so can't really provide any real details about those future plans.