Improving the efficiency of reviewing drafts and providing feedback in influencer campaigns often requires a few steps:

1. Use Campaign Briefs: Begin with a clear campaign brief. It provides influencers with a guideline which reduces the chances of getting drafts that are off-target. Platforms like Flinque, for instance, allow easy creation and sharing of briefs.

2. Batch Feedback: Rather than providing feedback in a piecemeal fashion, compile it and deliver it at once. This approach results in less constant back-and-forth and better productivity.

3. Tools for Review: Using influencer platforms that offer draft review and feedback capabilities can increase efficiency. On Flinque, content is delivered within the platform, allowing easy navigation between drafts, comments, and revision histories.

4. Templated Responses: If you find yourself providing similar feedback across different campaigns, consider using templated responses to save time.

5. Timelines and Deadlines: Set clear expectations regarding response time for both parties.

6. Honest Feedback: Keep feedback objective and constructive. This could include things you like, areas of improvement, or changes to align with the campaign brief.

7. Performance Tracking: Utilize platforms offering built-in analytics. Such features help measure campaign performance and understand what’s working and what’s not.

Just remember, the software you choose to manage influencer campaigns will depend on your specific needs. Platforms like Flinque offer a comprehensive suite of review, feedback, campaign management, and analytics tools.