Often, I find myself requiring a time setting between the ones of '1 hour' and '12 hours'. I get impatient using the 1 hour setting, but at the 12 hour setting, the ticks are too far apart and game behavior such as UFO pathing and completion of construction, production and research becomes erratic, which I'd rather avoid. Also, there's not much call to have 12 hours and 1 day time settings both - the difference is only a factor of 2, while the previous jump is a factor of 12.
Long story short, I think the '12 hours' setting should be changed to 4 hours or 6 hours per second.
Failing that, I'd like to mod those time settings for my own use. Is this possible with scripts?