yes phantom as i have already said previously i would enjoy any of those sets you put, just dying to say i understand that first time people want hear a lot of the classics.
on what makes them classic, a lot to do with the band always playing them, sometimes songs that were particularly good on live releases.
the more you like a band and have seen them often, you want more surprise, motorhead is a good example as i have seen them countless times and to be honest wouldn’t go out of way to see them the only songs you wouldn’t guess before hand is the sons from overkill and spades albums “they seem to rotate through those whole albums”
as for saving time and money it depends on you circumstances, my have changed recently so getting to more gigs and planning on going to mainland europe twice a year for festivals. don’t think kreator have ever played in northern ireland and its been a decade since they played in southern ireland. my choice of summer festival was based on a list of bands i would like to see, kreator being pretty much top of the list, only disappointment is that the album won’t really be out so chances are few songs from it, i’m assuming they will headline one of the nights so hoping they get decent stage time. there are a few songs.
also wondering how you feel about just playing songs from “classic” albums which seems to be popular at the moment. at eindhoven heathen, destruction, exodus and sepultura did this. had to avoid the internet for weeks before as i wanted to be surprised by what the bands played. the reality was pretty mixed anyway going by the way they did it krater would be playing songs from terrible certainty and before. i’m not sure the band would actually go for this i don’t know.