Mixing availability of '2-3 comebacks per year' group
with
exclusiveness '1 comeback per year' group
like debuting one group and then after 2.5 or 3 years debuting another and making sure to stick to this
group with more comebacks could mix single albums with mini albums at first
and group with 1 comeback in year should debut with mini, and then mix it in a way 'one full album' in year 22, one mini in year 23, one full in 24 etc.
ocasionally this exclusive group could also have some CF song, but only if it's something big like Coca Cola or Samsung etc.
also it would be more based on 'surprise' element, for example imagine if they would usually perform lead single + one b-side, but then during award show season they would surprisingly perform some other b-side that no one expected to even happen to show their duality :)
