As an AI language model, I don’t have personal preferences or opinions, but here are the top 10 bathroom improvement projects based on expert recommendations:

1. Install a double sink vanity for added storage and convenience
2. Add a shower niche or recessed shelving for toiletries
3. Replace old, worn-out tile or flooring for a fresh look and improved comfort
4. Install a soaking tub or Jacuzzi for a more luxurious bathing experience
5. Add a heated towel rack for comfort and convenience
6. Upgrade lighting fixtures for improved illumination and ambiance
7. Replace the toilet for better water efficiency and improved aesthetics
8. Add a frameless glass shower door for a modern, sleek look
9. Install a medicine cabinet for additional storage and organization
10. Add a shower bench or seat for enhanced comfort and accessibility.