ah, that makes a lot of sense! i was thinking more in terms of general image, but yeah definitely i'm sure photographers take these calls in all cases - it is their job after all. i was also thinking about why xdh in particular have so few pictures with their instruments, until i realised that 2/6 of them are keyboardists. would be pretty difficult to fit them all in a photo!
also yeah. normally i am of the opinion that bands and kpop can go hand-in-hand - as you said, there have been many successful examples of that. i was however thinking about if one values independence (over songwriting, image, etc) as a key part of being a band. i don't think the kpop system would allow for a full and complete independence in both at the same time (e.g. even if they write their own songs, higher-ups can tell them to make some edits - like beautiful life itsef, which was initally a much longer song before xdh were told to cut it down. also how they appear in front of the public, such as the interviews and shows they do, whether they're allowed to fuck up, or if even the smallest mistake would make them have to writea hand-written apology).
however, it's also worth pondering if non-kpop systems necessarily allow for this kind of independence. and the answer is oftentimes no, i'd reckon. every public figure has an image to maintain. maybe they don't have to keep the image up of being ultra-polished the way an idol does, but still, it's some sort of image. also, not every song idea would necessarily work, and sometimes higher-ups have to be the ones to tell you that. and honestly, a good part of me is convinced that lots of people's music abilities (singing, performing, or even songwriting and performing) are best honed in a kpop-like system. people forget that this system is full of great musicians, who could teach you these skills with a lot of guidance - which some people need. yubin, sunmi, and hyerim of wg learnt how to play their instruments from the company. boa and jonghyun started to write and produce within the idol set-up.
clearly, i love (over)thinking about things that won't directly impact my life. but thank you for the insights!
edit to add: i still think that balancing the idol and the band image is one of the biggest aspects of a kpop band and their management, but to be very fair to xdinary heroes, they have opened for muse at their korea shows, and have collaborated with yb (one of sk'd pioneering rock bands). i'd say that's a lot of band image in the balance!