1) So lets all get this right, even though both sides of this have been stated over and over. You... personally... have limited time to play, but are in favor of 24hr respawns but 100% against windows.
Now lets think this through... if something spawns exactly 24hrs after the previous respawn and there is nothing to move the window to other time zones... ever... either you or every single other time zone would never see this mob, have no windows means literally seconds of available time where you would have to be there every day for the claim, end of story.
2) I was going to say FF11 did it, but no, it was by far the closest though, the first maby 5 kills was amazing reguardless of drops, but after that I needed a good drop generally (some of those wake up in the middle of the night to claim/kill days was a happy moment reguardless of drops), but the fact that every single time i saw an e.body/ridill/d.ring/a.body or any drop anyone there needed atleast in my eyes means they did it right.
3) OMG... its called einherjar, it had literally the exact same drops as the HNM's, and had higher drop rates... and more drops, for the love of god look up einherjar or something so I can stop repeating it.
Camping/having windows has nothing to do with being "hardcore", it makes economical sense. Believe it or not having windows would not benefit me or any of these other people, windows share the HNM's between time zones and keeps them rare at the same time. All of these other methods we keep getting repeated to us sacrifice one or the other, your either trying to keep the HNM in your specific time zone 100% of the time (which you are), or others are trying to lower respawns/make it an instance and make it worthless and burn the content within weeks of release.
In short, you do not have to like windows, but they should be there to keep the balance, you have an alternative... or atleast you did in FF11, what you should be fighting for is making sure an event is released like einherjar (in terms of having the same drops).