In regular vim, if you press "." (period) then it will repeat the last command you executed. Does Vimium support this?
No, it doesn't now.
performFind and performBackwardsFind will remember the last position.
For other commands, you may use 3<< and << will be repeated for 3 times.
Add: <3< is not the same as 3<< - at least now, and it is treated as < and then 3<.
Closing.
Lack of interest.