[Question] Why not joining SDK forces with Oculus and Microsoft?

a Quick sum-up first:

Unity is working on "AR Foundation" to get ARKit and ARCore into one wrapper SDK
Unity is also working on "Project MARS" to reconcile like ALL APIs

Microsoft "MixedRealityToolkit vNEXT" is for Unity but not from Unity and wants to wrap around MR, OpenXR and SteamVR

Oculus is contributing from their side with their "Unity Utilities"


That's like 4 project reeinventing the wheel for the same InputSystems and what not.
Wouldn't it make sense if you all sat down and merged all that into MARS?

 

While convenient, all-in-one solutions can be inefficient, ignore device-specific features, and homogenize the look & feel character of individual platforms. Yes it's a fractured landscape. And there's more sdk than just the ones you mention.

Meanwhile if you're using more than one sdk in a project, consider using my company's BridgeXR sdk manager to switch between them, depending on your target device. http://www.parkerhill.com/bridgexr/

 

@linojon have you taken a look at the Mixed Reality Toolkit lately? To me it looks as if they are ruling out your concern about efficiency and device specifics fairly well. You should definitely take a look at this:

https://medium.com/@stephen_hodgson...-mixed-reality-toolkit-for-unity-ad21b0e331b1