Hi Llamaman, I understand your frustration. Unfortunately AmigaSYS and ClassicWB were made by WinUAE users for WinUAE users. They require WinUAE to install them and there is no other choice. I found this pretty annoying when I wanted to try them because I don't even use Windows. I think a Workbench distribution should come as a LHA file which you can copy to a SD/CF card to put in a PCMCIA adapter and extract directly to your Amiga's partition, then boot from it.
A few online friends and I have been working on a new Workbench distribution which caters to real Amiga users, and has been built from scratch on real Amigas only. We will distribute it the way I described, as a single file which is unpacked directly to the Amiga. Once it's installed and running, you will be able to easily add new software by loading the package manager, which lists plenty of programs, utilities and games which are available, you simply select the ones you want and click and install button, the package manager takes care of downloading and installing the files for you.
I guess it might be too late now since you may not keep your Amiga, and it could be a while before our distribution is ready to release but I hope you'll try it if you still have your A1200 when we bring it out, I think you would find it easier to try.