I am not sure if this belongs in this forum, so feel free to move this where appropriate.
If there is a team of around 10 people that want to make a game, from this 10 people there are 3 programmers, 3 concept artists, 3 modelers, 1 composer. Project leader leads entire project and the team, but from 3 modelers that are around same level of experience one must be the lead artist, to coordinate others, and find new artists to work on the project. It is inevitable that someone with much higher skill will come along at some point.
My question is does lead 3d artist or any leader should have highest skill level or experience? It is not like you can start switching leading roles when someone better comes along.