hi, am not sure if this helps or not but this is my list, its fine for me but am sure not everybody has the same.
zypper lr
# | Alias | Name | Enabled | Refresh
---+-------------------------------------+--------------------------------------------+---------+--------
1 | OpenSUSE_Security | openSUSE Security | Yes | Yes
2 | Packman_Repository | Packman Repository | Yes | Yes
3 | download.nvidia.com-opensuse | NVIDIA Repository | Yes | Yes
4 | download.opensuse.org-Backports | openSUSE BuildService - KDE:Backports | Yes | Yes
5 | download.opensuse.org-Community | openSUSE BuildService - KDE:KDE4:Community | Yes | Yes
6 | download.opensuse.org-Wine | openSUSE BuildService - Wine CVS Builds | Yes | Yes
7 | download.opensuse.org-mozilla | openSUSE BuildService - Mozilla | Yes | Yes
8 | google-chrome | google-chrome | Yes | Yes
9 | http-download.opensuse.org-90b8e136 | Updates for openSUSE 11.2-0 | Yes | Yes
10 | repo-debug | openSUSE-11.2-Debug | Yes | Yes
11 | repo-non-oss | openSUSE-11.2-Non-Oss | Yes | Yes
12 | repo-oss | openSUSE-11.2-Oss | Yes | Yes
OpenSuse Security I only have because I use the KeepPassX application.
Packman Repository is I think a must have, and I migrated as much as I could to this repository using Yast, selecting the repository and clicking the “switch system packages”
NVIDIA Repository I use because I have an Nvidia card, but the repo is often a bit behind what you can manually download at nvidia
openSUSE BuildService - KDE:Backports, I migrated NetworkManager-kde4, amarok, ktorrent and such to this as its a bit more up to date, especially as I had some issues with the amarok in the opensuse 11.2 repo
openSUSE BuildService - KDE:KDE4:Community, only for acetoneiso2
openSUSE BuildService - Wine CVS Builds, for latest build of Wine, very up to date this one
openSUSE BuildService - Mozilla, for thunderbird & firefox
google-chrome - for the latest build of the browser
The rest should be obvious. Small note, I do use one-click installs now and then but I never select the option to add those repositories, I find it makes the whole think less clear.
hope it helps a bit.
Xil