I'm tired of answering kilometer long posts filled with insults.
Shepard was not indoctrinated when he was on Thessia.
All the best.
Elaborate.
Apparently other Reapers didn't have the ability to control Collectors. Your point?
1. No evidence.
2. The Catalyst is part of the Citadel ffs.
3. Wut?
The Crucible provided the beam and the energy for basic run. The Citadel provided software/hardware and energy to actually launch it and enhance it. That's how I understand it. Perhaps I am wrong, but I fail to see what relevance it has towards IT since people here claim anyways that all this was just a "vision".
And you are totally right, Reapers are very inefficient. First of all, they certainly were wrong to leave just one capital ship (Sovereign) watching the organics and enabling the Citadel relay at the right time - once it was defeated, they didn't have real back up and had to waste, what, 3 or 4 years while organics could prepare to the invasion? Then, it is weird that they didn't attack Citadel right away as the main point of civilization - they could easily have taken it down with a few dozens Capital Ships (especially since Catalyst was on Citadel and could program its systems to assist the Reapers), and after that they would have to fight separated and confused chunks, just like they did with the Protheans.
However, inefficient as they were, they still followed some basic warfare strategies, they still gave priority to the industrial centers and capitals. To assume that they specifically planned all the races to unite against them to win a single battle against them would be ridiculous.