"Drmies thinks "four different spellings" (birth and stage names, in Hangul and romanization) is too much, and he thinks birth dates are irrelevant and unreliably sourced because you can't trust the entertainment companies (the source of this information). There isn't a single place on Wikipedia where such lists have anything but name and instrument. At best you find a range of dates for when they were in a band. You never find birthdates..." 

So basically you guys want every to comply to your standards? Yet again, I see many of you comparing Kpop to Western pop groups. Wikipedia is a free editing space for everyone. If fans want to include birth dates and positions and such then so be it. It should not be up to a circle group of users to decide what and what does not go.

"he thinks birth dates are irrelevant and unreliably sourced because you can't trust the entertainment companies (the source of this information)"

Give me an example. I have never seen such a thing. Only weights and height are infamously unreliable in kpop.

Not every member of a specific group is notable enough to have their own page. Therefore basic things such as birthdates, hangeul, romanization, and basic group positions should be listed in a table.