Option to add 2 other customize buttons to the compose / reply toolbar for formatting emails etc

Could we please have the option to add two other custom compose / reply etc buttons like in Outlook for formatting emails other than your current Unordered / Bullet button.

1). A button “Arrow” pointing to the right with “white at the top half and black at the bottom half” as per outlook does. (See Screenshot url below)

2). A black “round outlined circle with white fill” as per outlook does. (See Screenshot url below)

Note:- Many peeps including my self have used both of these formatting options composing emails for years and its difficult without them. If those could be added in would be great.