Yeah, currently there is a tool for you to create polygons of arbitrary shape, but I still cannot find a tool that can help me draw a regular polygon easily...

https://en.wikipedia.org/wiki/Regular_polygon

which means polygons that have
1. equal inner corners, and
2. the inner corner sum of "(n-2) x 180" degree
i.e. equilateral triangle, square, uniform hexagon, uniform pentagon, etc.

I hope krita can support this quite basic feature asap as well (If there is one already, please correct me...but I hope krita can make the tool more "visible" as well...)

As i remember, photoshop and inkscape both have simple tools to drag a regular polygon
ref: https://www.youtube.com/watch?v=9vSbxxoAek4
ref: https://www.youtube.com/watch?v=pBLy9KDPMHk

They both act like rectangle tool, you can drag and preview the shape on the canvas, but you also have text fields to input "number of sides" etc. (Maybe in Krita "Tool Options" Pane if krita finally got this tool?)