This is the most important problem to solve. How many different camps there are, and what do each want.the KoE community can not agree on what it wants since it is not a unified community. Your very post about precision play/hammer play shows this. I believe all efforts to gather a unified, or largely unified, community based "want lint" is doomed to fail. Mainly because there are so many people playing the same army for different reasons.
For example, if there are two camps, one loves the scapel style of KoE that excels at mobility, objectives and quirugical striker and the second group wants to play KoE as a hammer, right in your face without movement shenanigans', then the designers will have a much clearer goal.
But if the answer is "every KoE player wants something completely different" and "KoE units needs to be better and cheaper" there is no realistic way to satisfy the majority of the players and the new book will be just be a mess.
If the answer is "every player wants something different", it only makes sense to maintain and expand upon the current strengths, weaknesses and playstyle. How could it fairly be anything else?