Balance surely doesn't depend on having this or that particular player, e.g. that you have Skipp where previously you had Tettey? Isn't balance to do with overall approach, playing strategy and tactics? Those will determine what type of player you need. How good those players are at delivering what is needed from them is another question.
Also, lack of balance may be concealed by opposition deficiences, which I think applied under Farke. What Championship sides lacked the quality to expose became brutally evident once promoted.