All personal planets in one sign

How rare do you think it is to have all your personal planets (Sun, Moon, Mercury, Venus, and Mars) in one sign. I randomly looked up my cousin's chart and he has all his personal planets in Virgo. I imagine having so much congruence, can lead to truly and quickly knowing oneself, inside and out. No real confusion or lack of awareness when it comes to the self. What do you think? My cousin comes off like a real life superhero.lol

Hmm...for me I guess growing up with a Taurus sun and Cancer moon- I was so annoyingly confused with my own nature. I wonder if it would have been a blessing being all Taurus. Although, now that I think about it..we need a push and pull within ourselves.