It is not the writing that is the problem it is the coding. Adding a second romance path for SGRAs to a companion requires to change the dialog tree quite alot.
Not only that but you'd have to have cutscenes as well, several ones for all the companions involved. I don't want to find excuses but that's also something to take into account.
And, like some others have said before, we don't know yet how elaborate the romances on Makeb are going to be. With all the 'It's only two flirt lines anyway..." talk (from both sides) I hope they won't settle for that, you know, since we didn't expect more anyway.
I think if things turn out lacklustre, we have to hold them accountable but we also need to be fair.
On another note, I forgot what a drag Tatooine was. Geez.....