True realism at the right place and time.
Fly out of SeaTac or Chicago O'Hare in most flight sims at sunrise, and you'll get a richly detailed airport, realistic traffic, realistic surrounding terrain, etc. with hopefully jaw-dropping views.
Pick a random airport at a random time with an obscure name or location in the US Midwest, and they all start to look the same (even with detailed, realistic geography): a mostly flat expanse with some hills, and either just the local city lights (if that) or a dull mid-day sun.
To be fair, those checklists are also largely there for so many pilots and those in training whom want to get the experience.
You haven’t seen either of the last two MSFS releases have you? They’re using high res satellite imagery of the entire globe. Even small towns are shockingly detailed.