If this PR gets merged the following default values have changed to false and need to be added to the migration guide:

Template Column

• ShowColumnOptions
• Resizable
• DragAndDropEnabled
• Sortable
• Filterable

Select Column

• DragAndDropEnabled (change inherited from Template column)
• ShowInFooter

Hierarchy Column (changes inherited from Template column)

• DragAndDropEnabled

@tjscience last year we talked about this change here: #6049 (comment)
I hope we had the same thing in mind by setting sensible defaults.

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.69%. Comparing base (28bc599) to head (a560694).
Report is 260 commits behind head on dev.

@@            Coverage Diff             @@
##              dev    #9142      +/-   ##
==========================================
+ Coverage   89.82%   90.69%   +0.86%     
==========================================
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  Lines       11878    12465     +587     
  Branches     2364     2427      +63     
==========================================
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+ Misses        681      623      -58     
- Partials      527      537      +10     

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@henon @danielchalmers @ScarletKuro ready for review ✌️

I will let @tjscience to decide, I'm unsure about the ShowInFooter="false" default as it leaves awkward space in footer, also it's been default for a very long time. I only pretty much agree with Fiterable="false" as TemplateColumn is not attached to any data and filtering is not possible as result confusing people.
It's not only for action, but for dynamic usage too when you don't have a property at design time.

@ScarletKuro the "awkward space in footer" was there already and is not even dependent on the ShowInFooter setting, as it is introduced though the spacing of the checkboxes.

I wanted to open a separate pr for that.

@dennisrahmen can you write down all breaking change of that PR for the #8447
in similar format so we could just copy paste it? Thanks.

@ScarletKuro @henon I took the hole block so you can just copy paste.

## MudDataGrid

- Removed `FilterDefinition.GenerateFilterExpression()` replace with `FilterExpressionGenerator.GenerateExpression`
- Removed other old APIs from `FilterDefinition` that was replaced by `IFilterDefinition` API.
- `FilterContext.FilterActions` all properties are marked as required.
- `FooterContext.FooterActions` all properties are marked as required.
- `HeaderContext.SetSelectAllAsync` all properties are marked as required.
- `HeaderContext.IsAllSelected` changed type from `bool` to `bool?`.
- **Column**: replace `IsEditable` with `Editable`
- **TemplateColumn**
  - `ShowColumnOptions` changed default to false
  - `Resizable` changed default to false
  - `DragAndDropEnabled` changed default to false
  - `Sortable` changed default to false
  - `Filterable` changed default to false
- **SelectColumn**
  - `DragAndDropEnabled` changed default to false
  - `ShowInFooter` changed default to false
- **HierarchyColumn**
  - `DragAndDropEnabled` changed default to false

For more details see https://github.com/MudBlazor/MudBlazor/pull/8548, https://github.com/MudBlazor/MudBlazor/pull/8317, https://github.com/MudBlazor/MudBlazor/pull/8892, https://github.com/MudBlazor/MudBlazor/pull/9142

Thanks Dennis