statix mate theyll just go with the reapers being destroyed ending and wont think twice about it. that or EA will make the decision for them. Theyve shown with the ending that 'everything mass effect stands for' means very little to them. 'All of our choices effecting the end' and 'we dont wanna give our players an A-B-C ending' and we ended up with a blue-green-red ending that was so bad they had to redo it to try and save their own asses from the fan backlash all because whoever was in charge of the ending had a hardon for deus ex.
So yeah im pretty sure they wont have any difficulty in deciding where they are gonna take this.