A feature requested by spikevision is the following:

Repeating the last action
No "Repeating" is different than "redoing". It refers to applying the same
action again on an object or on a different one. Redoing reapplies the
action that was undone. Some drawing programs, like CorelDraw, give the
ability to repeat the last action(CTRL-R). For exemple, if you applied a
color on an object, you could select another object and repeat the fill
action. The second object will have the same color. If you performed a
"rote/move/leave original" action on an object, this action can be applied
to the newly created object. This can be handy when creating patterns like
in the european flag exemple of "A Guide to Inkscape" by Tavmjong Bah. This
would be faster since it could be done with just a few keyboard shortcuts.

 
I began its implementation, but as i'm not sure to do it in the right way, i would like to discuss with someone having a better vision of the source code than mine.
I attach you what i've done for the moment, waiting some feedback before to continue.

Also, spikevision sent me some icons that he drew for the 'repeat last action' button, and i forward it to you : which one do you like more ? (to me, it's number 6)

Cordially,

cbvJohn