While Project Starshot aims at taking photos of a planet around the nearest star, there are still many places undiscovered in our Solar System besides just the oceans on Europa. Many debated future projects include the Europa submarine, and aircrafts in the clouds of Venus.
1) The martian ice caps have yet to be explored. My NationState is creating a robotic probe to either the Martian Polar Ice Caps and/or the icy crater. This probe will be launched in 2020 and arrive in 2023.
2) There has never been any photos of the cloudy atmosphere of a gas giant on the planet itself. My NationState is building a probe to explore the cloud tops on either Jupiter or Saturn by the year 2049.
3) There have yet to be landers on any of the outer moons besides Titan. My NationState plans to fund the project for landers on both Titan and Europa. My NationState is working for projects to send rovers to the following moons; Io, Ganymede, Callisto, and Enceladus. All of these missions are planned for the late 2030s and 2040s.
4) There has never been a land rover on Mercury. While my NationState is not interested in this planet, it will fill in the gap if nobody else cares. It'll take pictures of the planet's dark surface, much like as would happen with our moon 'Luna'.
5) My NationState plans a sequel to Project Starshot. That project is heading towards Proxima, which is a red dwarf. My NationState is going to use the same technology to send a swarm of probes to chase planets around Alpha Centauri A & Alpha Centauri B and take pictures of the planets and the two suns as viewed from the orbit of those planets. This will be launched on the date photos of the Proxima system reach Earth.
All of these are important.