1) So wht if their goals are different ?
2) kaname tousen,yammy <Didn't know which character u wanted named so i picked one Hollow and shinigami
3) How is it a good thing for the soul society to be spying on him. Hollows are smart they wont even go as close to Ichigo because his reiatsu is huge.
4) If the soul society was not spying and suppressing Ginjous powers he would not hav turned against them or evil ( They could hav just left him alone) this led to his fullbring group which involved the attacked on his friends and himself all this would not hav happend if the soul society did not spy on Ginjou (I know im going in to to much depth ^ If all this didn't happen there wont be a fullbring arc ^ but thats what makes it interesting.)
You are too stubborn.
1) IS Surveillance as evil as destroying karakura town for the kings key to take over soul society?
2) Tousen thought he was doing it for justice. Yammy is too stupid(compared to the other espada) and probably easily convinced by Aizen. These guys are pawns compared to Aizen.
3) BRO, Ichigo's Reiatsu was large before he became shinigami. It was so large it blocked off Rukia's sensory that why she couldn't detect the hollow.
4) You give your theories with no back-up evidence. He became evil because Soul Society is "spying" on him. What part of spying made him evil?
Remember this: Sub shinigami are not CLOSELY related to Soul Society. Someone who's as strong as Ichigo/Ginjou should be monitored and suppressed because they can easily rebel and cause chaos. Soul Society is suppose to be "heaven" for any souls sent there.