Would just point out that so far as storylines go, it is widely acknowledged that there are only a few basic frameworks that all stories follow. What makes one different from another and a great story stand out from a merely good one is the quality of the narrative and the characters within it. Bioware has always stood out because of the characterisation of companions, the friendships, rivalries and romances. There have also been a fair few stand out villains that our hero has to overcome. What is wrong with having to save the world? Surely that is what classic fantasy is all about. Having a definite aim also helps the build towards a final conclusion.
In DAO there was never any doubt from the beginning that you would have to save the world. What was important, and what provided the variety, was how you did it. It had me totally emotionally involved, particularly during the Battle of Denerim because I had turned Morrigan down. With DA2 I felt that the real climax was at the end of Act 2 and the confrontation with the Arishok, particularly if you opted for the one on one. You may not have saved the world but your had saved Kirkwall. For me Act 3 felt like a really long drawn out epilogue and the two final boss battles were just silly because of the motivation (Orsino despairing when I had just hammered the Templars with no casualties on our side) and Meredith (suddenly acquiring super powers).
DAI looks as though it is going to be genuinely epic. Yes, we are going to be saving the world again, but I really hope we can do this conventionally and kick his a**, not have some odd art house resolution or a totally daft twist.
As for the romances, I think we are lucky to have so many choices and that the romances have been written to fit the character and story rather than just making them a generic, one size fits all. Yes, there appears a gender bias but I prefer to see it from the positive point of view. If you take out Cullen and Solas, who are only there because they were allowed the extra time to put them in, and you are left with 2 choices for each orientation. In the past Cullen and Solas would have come to us as DLC (like Sebastian and he was only available to females), so I'm just glad they are there in the main game.