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I'm marking this as a discussion because I would potentially like to get some mockups from the community for a Properties experience.

The current (in explorer) one looks like this, but I wanted to modernize it by reducing or potentially removing the many, dense tabs on top.

To take some inspiration, Here's how Microsoft styled it, with the UWP Mobile file explorer. Still pretty simple, space taking (Doesn't open a separate window), and not Fluent design styled.

.PSD file download.
_*not used_
@PoorPocketsMcNewHold This looks pretty good. I'm going to work on one that incorporates some of these design elements.
I would use a pivot control rather then a side menu.

This is the design I'm going for so far, still a work in progress so things will definitely change.
Also, some things are broken in this screenshot.
I think this is a great design as it is similar to the existing version and will be familiar to users. About using rounded corners how far should they be users? Should they be on buttons and text boxes too?
Got it, so for buttons and text boxes it's mainly 2px?
Yes that’s correct. However, flyouts will use 4px, while some controls like TabView don’t support CornerRadius property yet.
I think I will work on some buttons and text boxes then, is flyouts content dialogs?
To my knowledge flyouts are technically context menus or small notification banners, but context dialogs also fall under this 4px category.

I decided to remove the pivot control for the initial implementation. It will likely return when more properties are supported. I'll have this hooked up to the code behind very soon. Sorry for the delay.
@yaichenbaum
Good idea for now, once the initial release is ready it should be simple to scale up this page.
@duke7553 I don't think so much space between each property item is necessary. You can decrease the top and bottom margins by atleast 6px and fit more properties in the same window. Just a suggestion.
This has been addressed in 722f9ef640716b744cd3989a25ff2cb85a7e75f6