Yeah, it's an effort to get away from the uber edit panel which was a giant impossible mess. An earlier version of this made each section its own box, but I think they got merged at some point. I might try breaking them out again, I think it looked a bit less busy with full headers for each section rather than a series of property lists.

Can they be grouped maybe 'Basic Properties' and 'Advanced Properties'? As in, will basic settings satisfy 90% of people.

This is basically the "Advanced" view. The "Basic" view is the stepped form we walk you through to get here, and theoretically you never need to look at this again. In practice, most repositories need to configure at least some of this stuff so I think we can't really shove it under the rug too much.