Feature request: add css columns property to Group block

I frequently use css columns property to style many parts of my site, but I have to add this as a custom class to a container block and use custom css to style it. This works really well on the front end, but obviously, does not display in editor. (See example on web page I have linked to)

Why this should be part of a core block:

1. It is unlikely that it will be created as a third-party stand-alone block as it has to be used as a wrapper. The group block is an ideal block for this.

2. Css columns property produces fluid and responsive layouts with just a few parameters (even beginners can get it!)

3. Css columns layouts cannot be achieved with existing blocks (e.g the columns block), hence, it has a distinct use-case compared to other column/grid options available in WP right now. (It might be called “text columns” to avoid confusion with the standard WP columns block.)

4. The group block is very basic at present, and can easily accommodate some additional functionality without becoming burdensome.

I think css columns belongs in the core GB blocks as it adds versatile core functionality, without bloat, and is not just a pretty gimmick (which, I’m sorry to say, some GB blocks tend towards)

The page I need help with: [log in to see the link]