I like a nice even balance in every game. This is slightly different than what I do but look at disney.
If you go to wdw, disneyland, disneyland paris. When you go to those resorts, there is a huge amount of imagination put into everything yet at them same time there is an increadible amount of detail(realism).
So if you can get that balance in the real world you should get it in a game as well.