Oh, I don't mind boss fights too much, I just think the one I saw in the preview video was rather uninspired. But I've seen worse.
As for copy-paste grunts... yes, give me more! The copy-paste grunts in Crysis were more than just cannon fodder... at least, they were with a simple tweak. In case you are unaware of it, go into diff_bauer.cfg (which controls the "Delta" difficulty setting) and change ai_RODLowHealthMercyTime to 0. That disables "Mercy Time" which means they will actually try to kill you instead of simply
looking like they are trying to kill you. It doesn't affect damage or accuracy or other AI behaviours; it just stops them from missing you on purpose when your health gets low. Start a new game on Delta and you will find a new level of respect for the AI in Crysis! (which is actually quite good but for some reason was "dumbed down" with this Mercy Time mechanic)
BTW, I also play Stealth.