Additional dragon buff.

In the current meta early dragons are pretty undervalued as the effects are negligible compared to the instant gold from either taking turrets or collapsing on people trying to take dragons and killing them. So what about an additional 3 minute dragon buff that could provide som sort of tangible benefit to the team that takes the dragon on top of the permanent buff, making trading dragons for turrets a worse idea, because the dragon provides a 3 minute power spike to the other team, allowing them in turn to get objectives?