I've always wondered about the feasibility of adding a reflective solar shield between Venus and Sol to cut the feedback loop that keeps surface temps so high, eventually reducing cloud cover and revealing what lies beneath. In addition, such a project might be good practice in case we ever needed a modified version for Earth, and may even be useful to add energy to celestial bodies (e.g. heat up the dark side of an asteroid by placing it at the focus of a large parabolic mirror). Venus having an atmosphere and having almost the same mass as Earth has always made it, not Mars, my favorite target for terraforming and colonization.