i get the point and to some degree its vital understanding the limits of your peers when putting in expectations that their character or loadout cant meet.
at one point @Pirx even mentioned me understanding the essence of a particular psyker misplay without even playing psyker for 1 second
(i literally hate scrawny characters, why be chicken legs when you can be rühl-stabil 
)
on the other hand i’m literally “that guy” that practises “the one kick a thousand times”
when i’m set on a character, thats ME, my ogryn, my loadout, my limits(which i then attempt to break little by little/see recent karsolas progress)
i dont settle for competence (which again is a good foundation having when keeping an eyes on how your fellows do behind you) but strive for mastery (if and when i’ll ever reach it)
that way i make sure i’m always bringing my best, even when its my first warmup match of the day.
so, options? absolutely, 4 oggies are great 
as for the other 3, i respectfully “opt out” just as current havoc numbers games arent appealing for me, not being able to play “freely” instead of staying under the umbrella.
sure, if its your cup tea, go ham.
saw some gameplay footage, felt like grey plastic, remembered me playing kf2 ages ago for…6 hours and put it down.
something about the whole setting thats absolutely leaving me cold, artstyle and monsters dont even remotely make me feel like “i’m in there”
there was a very old, generic shooter in the 90s “kiss, psycho circus” which then was felt like the laziest attempt on “boo spooky enemies”
stuck in the back of my mind for decades as an example of how never ever to do art style 
well killing floor was that in a nutshell