What would the local church look like without the nearby mega-church?

Often what I teach still turns my mind towards ministry and the church. 

Alongside history, I also teach geography.

When thinking about migration and the talent drain this has on lesser developed nations, my mind turned to mega-churches.

Across the globe, including Australia, more developed countries have access to the brightest and most promising refugees and migrants. Being a skilled immigrant will open doors across boarders.

But, in doing so, it weakens the home nation.

They lose doctors. 

They lose engineers.

They lose scientists.

A similar thing happens with the local church and it’s mega-church neighbour.

Far too often, drawn in by the attraction of resources, personalities and numbers, the best and brightest within congregations will migrate to a nearby mega-church.

The small church loses musicians.

The small church loses young adults.

The small church loses emerging leaders.

And the large church hoovers up the winnings.

This weakens the local church.

So, my question is… Would the local church be healthier without the mega-church?

What would the local church look like without the talent and skill drain of the regional ecclesiastical metropolis?