I'd rather be able to appoint Vilkas leader of the companions, Mirabelle the archmage, Brynjolf the head thief (lol) and I haven't done enough of the db to say. I just don't think my character has to be the head honcho of everything ...
See now, I enjoy being head honcho of everything. It's not like much is asked of me. I'm like a corporate mogul - I own and run tons of things, but I don't ever really need to be around, because, like, I have that "well-oiled machine" kinda corporate structure - the biz just runs itself.
That being said, I like to think of Brynjolf being my main guy in the TG, Cicero has my back in the Brotherhood, the triumvirate of Farkas, Vilkas, and Aela can mind the shop in Jorrvaskr, and in the College, I'd put the reins in J'zargo's hands. That cat is way cool. He can always turn to the old man, Tolfdir, if he needs a consigliere.