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I am a long-time SketchUp user, and I can see from the promotional email for Shape that pulling those users in is a marketing goal. Good to have a competitor out there and I hope Shape develops into a useful tool.
If you want to entice SketchUp users, I have a suggestion -- make a "SketchUp navigation" mode or something so that pan, orbit, zoom, etc. all work identically to SketchUp (using the mouse buttons, not selecting icons). Those operations are second nature to anyone using SketchUp, and having them translate to Shape will make people more willing to try it. A way to have one-letter shortcut keys (hotkey, not shortcut plus space or enter) would also be attractive as that way shortcuts from SketchUp could be used the same way as single-letter hotkeys to map commonly used commands.
Also, it seems that Shape is slower in display processing than SketchUp. I played around a bit with the standard template that opened up with a new document (with one man standing there). Just drawing a cube in that document and then trying to orbit around it and push-pull it had a definite display lag. For a simple drawing that seemed odd. I then imported a larger file (a model made in SketchUp, exported as DWG) that was fairly complicated. Very slow to move around and change view modes and eventually it hung up and I had to kill the application to get out.
This is not to hate on the new application or anything -- I am saying good to have this new option, but moving around easily and quickly is the first order of business in 3d modeling. If it takes an extra second or two (or more) to change view or push-pull a face, then it will be hard to get people to switch from SketchUp, which does a good job of having a snappy user interface.
By the way, my system specs are:
Intel Core i7 950 @ 3.40GHz
GeForce GTX 1050 video card