I wrote about the overall bump percentages for 4.0s in USTA League play this year-end, but grouping men and women together doesn't tell the whole picture. So below are separate charts for men and women 4.0s showing the percentage of 2013 year-end 4.0s that were bumped down to 3.5 or up to 4.5.
We see some differences between the men (left) and women (right), although the top-4 sections for bump ups for both men and women are PNW, NorCal, SoCal, and Texas. The PNW 4.0 men were given the highest percentage of bump ups by a healthy margin but the SoCal women, and even the NorCal women beat out the PNW.
The Caribbean women had the largest percentage bumped down, but the men were bumped up more. Perhaps Caribbean should be the early favorites for 3.5 women Nationals next year.
Interestingly, the Northern men had a high percentage of bump ups even though neither 18+ nor 40+ made the semis at Nationals. They did finish second in their flight in 18+ but third in 40+ so this number of bump ups and the low percentage of bump downs for them is odd.