I've been playing since 2.2, and am now on 2.3. One of the more annoying things though, is having to manually crank up the gamma when I start a mission (from the default to just over half of the bar) and re-adjust it to the default so the geoscape looks good again. Even the daytime missions are too dark at the default gamma level. Raising the default gamma level of the missions would be a nice fix for 2.4.