You can have the occasional really tall guy (6'-6" and taller) and they really stand out in a crowd. If you do that, keep all equipment, weapons, etc. to the same scale - that will make the figure look tall but not out of scale. If the figure in question is an actual historical person, do some research to see approximately how tall he really was (is). If the real person was actually 5'- 5", using a jumbo figure just wouldn't work.