I do not think that the male and female boards should be merged.
My reasoning behind this is because on the male board, there are alot more threads. And once a thread is on the second page, it tends to be forgotten about ( with a few exceptions). Its hard to maintain quality threads and long threads like that where we learn more.
I also do not think anyone who enjoys the female board should have to go through all the junk on the male board. And yes, there is alot of junk.