Enable DIY Activity Stream view: "Last Modified by" and "Created by" should be added to default fields


Currently these two very basic and useful read-only fields are not included in the basic fields:

“Last Modified by” : {User Name}
“Created by” : {User Name}

Adding these two will enable an “Activity Stream” type of view where all types are shown as card with no column and row, sorted by descending modification date. This much is possible now. But who modified or created a card will complete such a view.

The other thing remaining will be recently commented items. How can recently commented items be incorporated in the DIY Activity Stream as mentioned above?