Reading this thread, I came up with an idea.
1. The difference between 6 x 3d6 and 6 x 4d6 drop 1 is about 10.5.
2. 10.5 is the average result for 3d6.
If people want to roll 3d6 for their attributes (in order if they are old skool), they can then roll a seventh 3d6 and apply the results of...