It particularly bizarre in light of the writing credit for Wright and Cooper.

I think they've both been watching the clock in a sense, ready to move on to something else, namely getting their foot in the door for the movie industry, which seems to be their dream. And it seems like whether they work really hard and knock one out of the park or they just slack and have plot holes you can fly a puddlejumper through, the ratings stay about the same. So why work so hard and actually get it right?

I'd be quite happy to end it with the Ori. I've never liked them as an adversary.

Unseen enemies aren't all that scary, except in scenarios where not seeing them leaves you wondering when you will and what they will do. It doesn't work in the long term. Our Heroes can't react directly to them if they're not onscreen. TPTB had the Priors being the "face of the enemy" and they were boring as hell -- something they intentionally did because they felt the Goa'uld were too campy, colorful and over-the-top, so they wanted to go in the complete opposite direction.

Take two with Adria, putting another (prettier) face on the enemy, but I never understood why if the Ori were like the Ancients, a few didn't retake human form to lead the fight instead of creating a figurehead like Adria.