There are two ways of looking at the basic Trek Triad, and I believe the original writers caught on to this early in the series.
1) Mind, Body, and Soul
2) Head and the Heart, with Man as the crucible...a balancing act.
I believe many fans still gravitate towards this natural metaphor, and the fan favorites are generally these characters.
However, I confess to not having seen as many episodes of Voyager as I would have liked. (I work nights!) Those that I DID see, seemed too steeped in soap opera--rather than space opera--for me, as though every character HAD to get an even amount of screen time per script. The main characters seemed TOO balanced, themselves, giving no real opportunity for such categorization. I am uncomfortable trying to make an uneducated guess as to who would fit the bill for that series.
For fear of taking this topic in another direction, I'll pose this question to you Voyager fans: Which three Voyager characters best fit either of the two metaphoric definitions above?
Enterprise is another series I started watching too late, but I enjoyed all the episodes I did see...thanks to the SciFi network, I can now enjoy it every Monday. I think Archer is the most human of all the Captains since Kirk, and that aids in the crucible metaphor. Tucker undoubtedly played the part of the heart, while I am hard-pressed to confidently place the mind--it's too easy to just point at the Vulcan here, and I'm not sure she fully fits the bill, as something of an enigmatic outsider for much of the series...
OK, I'm done rambling now, Good Night!
A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly.
Specialization is for insects.
-Robert A. Heinlein