In all honesty, lead roles are less about actual game work load(they still have their fair share though) and are more about having general knowledge, organizing skills, leading potential, and capable of doing fairly frequent input and critiquing. You'll still most likely have your specific, specialized job. You'll just also have to keep tabs and have involvement in everything else.
Still kind of intimidating, yes. But the point is to be more the organizer, not the guy who does the majority of the work and know about everything visual. And don't forget, you have you're DASH visual developer to even things out there.
It is indeed more daunting than, say, writing and music qualifications, but that's because visuals are a big part of a game.