Sometimes I'll guess a count for a cursor movement, say 4b but it was actually 7 words away.  If I'd performed an edit I could press . to repeat; I could have done @: to repeat a command line.   It would be useful to repeat 4b again.  This functionality would also be useful, saving more keypresses,  if, having done 10<C-w>> I could repeat the window resize with a single key.  Is there a way of doing this I've overlooked?
Repeat motion easily
repeated commands