i am pretty sure it is possible what you are trying to achieve. Maybe you need to do some customizing to make it work (mostly wizard-based, so it shouldn't be to hard).
You should take a look device templates, connection profiles and macros. With those 3 tools you are able to connect to the desired devices and download their configuration.
Your best bet will be to start with a new device template, there you can setup the general device access like credentials and maybe custom prompts for user names or passwords.
While you are at the "config download" step you can set parameters for the specific devices which commands NCM should use to get the configs.
A good start would be to take a look at existing device templates to get an idea how they are built.
If you need any help with a template, feel free to ask.
I was hoping that someone had already been down this road and had a ready made solution or template posted.
I can't imagine I'm the first customer asking.
I'll have to make time and do some trial and error to include these products into our NCM environment.
Will share with group if I'm able to get this working.
I could help you with the ruckus part, as we are having some system running i could test with. What kind of deployment are you using for Ruckus?
Next monday i could come up with some results.