So, as we all know ICS is king in Civ 6. Tall is not a viable strategy. The increase per settler cost was meant to balance this. It failed to. It seems pretty obvious to me that simply increasing the benefit of higher populations via increase to science and culture would be an effective solution to this design flaw. There is very little incentive for high pop. # of tiles worked is even reduced due to districts/wonders. Make pop matter. On a related note, at high levels(Deity) much of the end game content is useless because of this flaw. SVs and DVs are not only possible but easier if you don't waste time building pop enhancing content (sewers, neighborhoods). This is absurd. I've beaten deity many times and have never taken the time to even try to understand appeal, because it's irrelevant. This to me indicates a serious flaw in design. Making population meaningful beyond 6-7 might help fix this and make more of the end game content actually helpful.