How Wide is the Top of the Pyramid?

On almost a daily basis I have at least one discussion about what life would be like if I were a lead pastor of a church.  Sometimes it takes the form of church planting, other times taking over for a church soon, and the most comfortable discussions for me...the hypothetical, long-time out idealism kinds of conversations.

It's interesting to me though as I reflect on those things away from conversation, away from the opinions of whoever has asked me the question, away from the perceptions of a mutual experience to be critiqued, that I find myself weighing the gifts necessary through many different lenses.  The most common of these, church size.

Assuming that the lead pastor is near the top of the hiearchy/pyramid of the organization, I wonder how wide that particular "top" starts.  Is it the tiniest of points, asking for precision from its lead pastor (like often found in many churches that get large enough that they share the point between "executive" and "teaching" pastor) who get to then function in one or two primary areas of gifting.  Or is it like a food pyramid, with a rather large base to even the top section, requiring gifting and leadership in multiple areas of ministry and staff development.

It causes me to wonder often, which gifts should I be spending the most time developing.  I've got a lot to learn across the board, believe I will have the need for learning forever, and as such, my resources are limited.  Time only allows so much development. 

Do I take the model that says focus on what you do best and become a "professional" in that area, or the other common sense argument which seeks well-roundedness.  It seems in many ways, the ability to function well in either of those things may be dictated in the future primarily by the size of the church.

Is it conceded then to try to develop yourself as if you will be at a large and empowering place...or limiting to decide now to focus on improving secondary gifts, or even weaknesses?

No real crisis here...though to this point, I think I've been reading my future in one light, and started to wonder if that is determined to be self-fulfilling, or if I should evaluate a different model of self/life/gift development within myself as well.

Thoughts always welcome.