cinematics are a must imo
but the boss fights should play out like in the final boss of GOWIII
for those who have played it (GOW3) im talking about where it goes side-scroller for a short period
they shoud, but wont. imagine makin animations for over 20 characters is just pretty much. If they do it, wow, but i highly doubt. It will be a normal fight with some special cinematic scene before and after the fight.
I'm not sure if that's what you meant, but those kind of cutscenes really disrupt the action in my opinion.