Logical properties are now on our backlog, with a high priority. You can track status changes at https://dev.modern.ie/platform/status/csslogicalpropertieslevel1/
Do it for the users :)
SVG2 is now on the Microsoft Edge backlog. You can track status updates at https://dev.modern.ie/platform/status/svg2/
CSS Masking is in development.
I have been using this in Webkit since 2009.
This is currently on the backlog with a medium priority. You can track changes at https://dev.modern.ie/platform/status/webgl20/
The status for conic gradients can be tracked at https://dev.modern.ie/platform/status/conicgradients/
The initial and unset CSS wide values are already in development in Microsoft Edge. The all shorthand property is now on the backlog with a priority of medium. You can track status updates at https://dev.modern.ie/platform/status/cssallshorthand/
Microsoft browsers are now the only ones that do not support this.