I know to some people, it would sound silly, but looking at the videos, it seems like a reasonable mod to consider making. Since the high density buildings can simulate only a fraction of what a realistic number of residents associated with the building would be, we could make something like a population multiplier mod. The simplest way is just changing the population displayed on the bottom of the screen by multiplying it by 3. Going further, since only the high density buildings are unrealistic with respect to population, how about counting up the residents living in high density apartments (if possible) and multiplying only by 2 and add to the real population? I don't really know how the game handles population hence the following questions:
Would it interfere with achievements/ 1 million population cap? I wouldn't think that those things were made to depend on what number is displayed on screen. If achievements are not dependent on displayed population, then we would have to make appropriate changes to achievements. If 1 million population cap is dependent on displayed population, we would have the problem of not going over the actual population that is less than 1 million (for example, if the displayed population says 1 million (but there are actually 1/3 of people simulated in the city) and if the 1 million cap is dependent on displayed population, then the city would stop growing after 1/3 of a million actual population. Obviously, we would like the displayed figure to go over 1 million.
Would it interfere with achievements/ 1 million population cap? I wouldn't think that those things were made to depend on what number is displayed on screen. If achievements are not dependent on displayed population, then we would have to make appropriate changes to achievements. If 1 million population cap is dependent on displayed population, we would have the problem of not going over the actual population that is less than 1 million (for example, if the displayed population says 1 million (but there are actually 1/3 of people simulated in the city) and if the 1 million cap is dependent on displayed population, then the city would stop growing after 1/3 of a million actual population. Obviously, we would like the displayed figure to go over 1 million.