I also want to welcome you at openSUSE.
I found it very interesting to hear/read about your experience with Linux compared to Windows and I fully agree with you.
As far as I understood, your are mainly referring to our current software management. I agree with you, that we have a lot of room of improvement here. As you might already noticed we started to take care about this issue. I would very much appreciate if you would participate in that project :-)
The other thing, we started working on is the redesign of the partitioner in YaST. More information will be available next week or in two weeks.
I can go all day long pointing out what I think are sins of User Experience commited in App UI, System customization, Desktop workflow.
Perfect! Then you have subscribed yourself to the right list! :-)