Feature Request: Native Variable Support

Problem:
the design system my team uses is based on an 8px grid, ie. we want to limit sizes to multiples of 8. This is something we currently do manually and works because there is shared knowledge, however it is a small bit of overhead.

Proposed Solution:
Allow us to define different kinds of variables that would be usable from anywhere a size can be specified. This would help standardize things like spacing between elements when using auto layout, padding, border radii, etc. Ideally my team can have slightly less overhead when making size decisions.

I have played around with both the Design Tokens and Figma Tokens plugins, but both are “too far from the metal” and the efficiency gains aren’t worth all the extra clicks and tooling.