Suzaku's command and Euphies command were different.
Sure both had no particular time duration and few specifics however they had fundamental differences.
Suzakus was very simple "Live"
As long as Suzaku was living or in no danger of dying (Through his own actions not through something beyond his control as even Geass cannot command that like Shirly showed) then the Geass had no reason to activate to make him live.
However Euphemias was alot more specific "Kill all Japanese" and like all geass commands this wil be carried out until it is no longer required (Like a command to yodel every monday stopping six days a week) or the task is done fully. The Japanese were still alive and so as long as euphemia knew there were japanese she would be bound to the command to kill them all.
At that point IIRC Lelouch did not even know of the existence of V.V or the fact that the Geass could be reversed in any way.It is said that CC undid Charles's geass of false memory on Lelouch at the start of season two and could do so because Charles got his geass power from VV, not CC. Thus VV should have been able to undo Lelouch's geass command to Euphemia since Lelouch got his geas power from CC. Lelouch could have asked CC if there was anyway to undo a geass command before ordering Euphemia killed, and CC could have told him if she had been asked.
Having been told that the Geass effects are permanent lelouch had no reason to question this nor any reason to believe otherwise.
To assume he should is folly and going beyond character expecations.
This is pitifulIf Euphemia had been captured and confined for just a year it would have been possible for Jeremiah to use his geass canceler on her. If Lelouch had any hope that something unexpected might turn up he could have captured Euphemia and she would have been cured in just one lousy stinking year!
lelouch capturing her on the off chance that in the future a guy he probably forgot about completely would join his side with a piece of equiptment built in complete secrecy to reverse the effects of supposedly irreversable ability.
Not practical or would figure in anyones calculation.
lelouch made his decision on what he knew not what he may know 1 year from then.
At the time he would have had no reason to think otherwiseSo much for your idea that Euphemia would have been controlled by the geass for the rest of her life.
maybeYou think that the Britannians would have launched a massive invasion to release Euphemia if she was held captive?
However it seems they were planning something anyway.
So euphemia could have been used as the excuse for an attack on the SAZ
Your assuming the brittanian forces would simply stop and allow this to happen and not simply attack Zero and his men like ......oh ......say Suzaku?If they valued her life that much, Lelouch should have ordered his men not to kill her but to capture her to use as a hostage to stop the Fuji massacre as soon as possible. Some people would say that not doing so made Lelouch guilty of murdering all the Japanese people he could have saved by using her as a hostage but didn't save.
Capturing her would merely have seen a counterattack.
So either way people would dieThe Britannians were going to launch a massive invasion of Japan anyway to recapture it from the rebels.
hardly likely.If the Britannians got hold of Euphemia Emperor Charles could have had VV undo her geass command.
Charles was a cold SOB
Remember his first reaction to news of the massacre was he throws his head back and LAUGHS.
I really think he could care less about Euphie
I believe her last words to lelouch wereI say that Lelouch didn't her Euphemia seaming in agony and begging to be killed before he shot her.
Euphemis: Damned Japanese (Her Mecha falls down in pieces)
cut to Lelouch
Com:What shall we do, Zero? Do you want her alive?
Lelouch:That would be useless, I'm afraid
Cut to euphie climbing up and looking around
Euphie: Massacre! I have to kill all of the Japanese!
Picks up a gun and shoots Lelouchs mecha before clip runs out
Eupie: Why? hurry!Hurry!
Lelouch exits mecha and euphie picks up a full clip and starts reloading
Euphie: Um, I think.......
Finishes reloading and look at Lelouch
Euphie: Oh! I thought you were Japanese!
I was thinking, why don't we announce the dedication of the SAZ of Japan together?
Euphie: Hmm! Japan?
Lelouch:Yes.......I would like to have done so.....together!
Raises gun and Shoots Euphie.
As you can see Euphemia was not playing with a full deck of cards at the time so the fact she wasn't begging is not a good reason. In fact it shows at the time she was barely able to control her own thoughts and was for the most part completely bonkers.
Enjoy the pleasures of life?I say that no matter what happened to Euphemia if Lelouch did not shoot her, no matter how much or how little she suffered, she would still be able to think and feel and enjoy some of the pleasures of life.
She barely seemed to even remember what had happened 2 minutes ago.
At the end of her life
euphie in the bed with Suzaku sitting next to her
Suzaku: I want you to tell me......Why did you give that order?
Euphie: Order? what do you mean?......anyway, Suzaku you are Japanese aren't you?
Euphies eyes attain the geass glow
Euphie: No! No! I can't! I can't think that way!
Suzaku: What is it?
Euphie: The ceremony......What happened to Japan?
Suzaku: Euphie? Don't you remember?
Cut to Lelouchs speech
cut back to Euphie
Euphie: Were the Japanese people happy?
cut to Japanese crowd
cut to Suzaku
Suzaku:Euphie. The SAZ ........It was a huge success. they were all so happy with the new Japan
Euphie: (Closing eyes) I'm so glad...
the rest is basically just euphie giving a speech about staying in school etc.
However this part backs up the first bit that Euphie had lost about half her marbles at that point and so letting her live would not have been the best thing to do.
I don't know about you but a life of agony and insanity is no life at all.
prove it?I say that no matter how much Euphemia suffered she would have been happier alive than dead.
prove the goody two shoes non-violence pacifist hippy called euphemia would have relished even a moment living as a deranged serial killer under a compulsion to kill and kill and kill