Welcome to the forum. Your experience here will more rewarding if you read the stickies, familiarize yourself with the forum rules and learn to search the forum before starting new threads.
This idea is regularly suggested but is currently ruled out.
Edit...oops, sorry boosting builders may not be ruled out but I doubt SC will jeopardize gem sales by allowing boosts on long lived items. They would need to be very expensive to have any effect.
