ToolShed adds an assortment of functions (including some free ones):
Radiant creates a group of lines fanning out like a pie chart at equidistant angles. Again, a preview allows you to adjust the number of divisions to match your art.
Latitude Lines creates a series of parallel lines distributed as though they were evenly spaced and wrapped around a cylinder (or globe). Use the live preview from the settings dialog to check your art before committing with the OK button.
Scale Proportionally scales an object based on the proportion between two values. Say you have a map and you know that the distance from one point to another is 16.7783 miles. You can draw a line between those points and enter the distance you’d like your scale of miles to be, and the selected line will be scaled accordingly.
Unscale Art can be used when, say, you’ve scaled a bunch of objects and one of them shouldn’t have been scaled. To return it to its original size, the plugin will figure the inverse of the scaling factor to restore it to its original size (or at least very, very close).
Scale Stroke Weight will quickly scale the line thickness of selected paths by the percentage you enter without having to futz with settings in your Scale dialog.
Minimum Stroke Weight will find all paths with a stroke thinner than your minimum and set the width accordingly.
More functions will likely be added to this plugin over time.
Please download it to try it out. There are 100 trial uses, and the Scale Stroke Weight and Minimum Stroke Weight will continue to work for free after the trial of the other functions is used.