Harsher in Hindsight: Tali trying to defend herself when Shepard asks if the geth deserved to be killed in the Morning War makes her justification in very bad taste once you learn about what really happened in Mass Effect 3. When you go inside the Geth Conscious you learn that the geth never acted out of hatred but out of self-preservation. You also find that many Quarian Geth-sympathizers were killed for refusing to kill the geth and their paranoia was eerily similar to Tali's.
Tali: "We made a mistake when we created the geth in the first place. But we didn't make a mistake when we went to war against them. If we had not acted, they would have wiped us out!"
Tali: "The geth are not innocent victims in all this. They're the enemy. They want to destroy us. Not just the quarians — all organic life."
- Another one regarding Tali: She was initially supposed to see Fist, a Shadow Broker agent, to give the recording of Saren and Benezia to the Broker. Fist betrayed the Broker and was ordered by Saren to kill her. That could have been the extent of that arc; however, the Broker had ordered Fist to kill her as well. The only reason Tali survived that ordeal is because of Shepard.
- Shepard, after abandoning either Kaidan or Ashley on Virmire, says that there is no "right choice" in that kind of situation, and s/he hopes she'll never have to make that decision again. Oh Shep, if only you knew. Just wait until Mass Effect 3, when you're making that same decision only this time it's between entire species.