Still waiting for them to hire Awesome Kong to take care of the women for them. That's the only thing women related in the WWE right now that I'd care to see (or a full time Trish return which I'm almost certain won't happen)
There's no reason to break them up. They have a lot of chemistry together. And I can't see either one of them as faces right now. Layla would be the better choice to turn face if it happens IMO, but I don't see any reason to do that now. It's going well, keep them together.
LayCool is one of the best things to happen to the Women's Division in a long time. There is no reason to break them up as they are the only Divas (excluding Vickie...if she's considered a diva?) that can actually pull off being a heel. They actually get a reaction from the crowd, unlike most of the other divas...most notably the reigning Women's Champ, Eve. They are both gorgeous women that are the perfect pairing to be the "mean girls" types. Not to mention they both are two of the best in-ring women on the roster.
I will be sad the day that they break my girls up, but like Daffney's Toy Boy said above, LayCool will be great for Layla's career down the line.