Nikki doesn't need her sister tbh Brie is like an after thought and just there. Nikki can go in the ring and her talking has gotten better and she LOOKS better. Plus the fans WANT to cheer her. They don't want to boo her, she actually generates interest. The thing with Nikki is, smarks recognize hard work. They prefer girls from the indies, but they will give credit where credit is due. Look at Trish Stratus she wasn't the greatest but people gave her credit because she improved 1000% over where she was in the past. On top of that, she appeals to the casuals through Total Divas, and on top of that, she has the LOOK. Her body has been on point.
I pay more attention when she's on tv
she really is at the point in her career where she could be a good all-around, and if I was Vince I'd be putting the title between her, AJ and Paige all day (I'd be building up Naomi too) but Nikki would be the top heel of the division.
I'm not saying she'd be on Stratus' level, but I'd have her in a similar position on the roster, always near the title picture. But realistically, it looks like she is going to walk at this point, having been in WWE for 8 years now. Its too bad because for a male in the same career he'd be just on the upswing. For a female you're winding down.