Moiaussi wrote...
If fleets are really 'useless' why do the Reapers worry about the Citadel at all? Why worry about isolating colonies or fleets?
Presumably Shepard will be instrumental, but if there were no defending fleets in ME1, are you saying that Shepard would have been able to defeat the entire Heretic Navy with just the Normandy?
The citadel is a shortcut for the reapers to the galaxy, really.Why take the long way around if you don't have to? Same with isolating the colonies.Why make it harder for yourself when you can make sure any resistance will be piecemieal and easily dealt with? Also the isolation makes sure that the trapped species won't be able to seed more colonies during the extermination.It's all about efficency and predictability.
As for the citadel battle, the heretic fleet wasn't really an issue.The reaper was.Without Sovereign, i'm confident that Citadel defences would have been able to deal with the geth fleet.However, a single reaper smashed aside the Csec fleet.Hell, it rammed right through a cruiser while under fire without a scratch.An entire fleet here couldn't even slow it down.The combined firepower of Arcturus couldn't make a dent on its shields while it could one-shot human cruisers.The only reason that battle was a victory was because Shepard pulled a rabbit out of his hat, and we don't even know what that rabbit was.Sovereigns shields went down suddenly after its avatar was destroyed in the council chambers and it toppled from its perch looking allready quite dead before the defending fleet blew it up.Whatever happened there will be, i think, the key to the reapers' defeat.
With all that in mind, at most i see the role of the fleets as a decoy or a bait for whatever miracle Shepard is going to pull, gathering all of them together.But this is all just speculation.