Conventional victory was neither stated to be possible or impossible in ME1-2. For reference play those games. It was never stated it sould be easy. Neither it was stated that the Reapers are unstoppable and invulnerable. Conventional victory is impossible in ME3 setting. Because of writers. However, I would like to present what should have been if authors haven't went with Mass Effect retcon super weapon mumbo jumbo:
Upon my calculations there are ~ 14000 destroyer Reapers and ~ 500 Sovereign class ones. + unlimited resources they have + indoctrinated husks. Tough. Too tough for our Galaxy. Conventional victory is impossible, right, but our 3 trillion lives Galaxy has everything we need to make it possible through various means.
1. Diplomacy like we have in original ME3. Uniting all those diverse and hostile races to work as one is hard, but it is the most important part about beating the enemy. That's what we have Shepard, btw

2. Technology. Galaxy has a lot of brilliant minds which can be used to close the gap between our tech and Reaper tech. Just look at Crucible statistics. Imagine how much more we could have achieved if those minds were upgrading our ships with even more advanced Thanix guns, advanced ships and such? I bet many of our ships like Quarian flagman and Destiny Ascension would qualify as Destroyer class.
3. Logistics. All those small colonies? All those quiet Reaper-free outposts? Perfect places to build industrial masses we need to produce ships we need (Soviets did the same with Siberia and Kazachstan when ****s invaded). ME3 could have much more interesting Galaxy exploration. Revisiting planets from previous games, upgrading them through special terminal, all contributing to the economic power we need. Resource scanning? Some have not liked it, but it would make sense here.
4. Strategy. Here is where side-missions would come in masse and would look cool. Scorched earth tactics avoiding Indoctrination maybe? Evacuation of scientists and martial leaders, old squadmates, everything would be good.
5. Artifacts. Replacing anomalies from ME2. Those would be the raw material we need for scientists to do this job.
Accumulating all this, upgrde the ships, organize the opposition - and we have damn good chance.
P.S. (but no we have starbrat. Easier this way)
Modifié par Oransel, 01 septembre 2012 - 03:14 .