Perhaps they're currently looking at that stage, wondering if it's too hard or not? It's a little depressing to think that they'll drop the idea of SGRA's with current companions (whether applicable retroactively or post 50) in favour of another speeder - of course continuation of current romances post 50 is going to happen with updated class stories anyway, but apparently the OGRA's were easier in the first place (and cheaper somehow? I'd really like to see the logic behind that.)
The logic? More lines equal more time. More time equals more money. Different lines may require different cutscenes (not sure on this one, but it's a possibility).