[Magic31]

If they have developed one-click installs the next step to add a one click uninstall function is not that far away as i see it.

The nice thing with rpm is that you can set it so that when uninstalling it will leave the packages alone that might be used by other (later) installed apps.

It's all a mater of time and priorities developers have, but I do think the rpm/zypper system is quite capable to make a smart uninstall system possible.
The thing that can make things complex is that installs can be done in many ways varying from building from source/copying to the new one-click setups. When mixing install methods, big chance you will brake parts of the system uninstalling eventually. But this goes for any system I've seen so far.

Just my 2cents,
Wj