The divas division is extremely thin as it is now. They would need to have a least 20-30 divas on the roster to give them more titles.
But with that many divas the WWE could create a separate diva-only wrestling show. If they're real serious about the revolution of women's sports why not give the divas their own show? Stephanie McMahon could run it just like Triple H is running NXT. It might be a crazy (and expensive) idea but what do they got to lose?
But of course, Vince would have to be dead for that to be a serious proposal considering he's not a big fan of women's wrestling.