Just to throw a different perspective on the original question (video game or sim?), there are some advantages to making it more game-like.
Many people, myself included, lament that there are relatively few newcomers into the hobby and that the proportion of newcomers represented by youth are almost nonexistant.
Take my son for example - 9 yr old kid, bright - but a different generation and not particularly disposed to spend countless hours learning something hard (fly an r/c plane). BUT, with G5 in particular he's so thrilled with the gaming aspect that he's modifying aircraft and spending and is spending a heckuva lot of time actually flying the thing. With the skills he's picking up, it will be EASY for him to fly the real thing, and when he goes to the field he will be successful instead of frustrated, and may end up actually enjoying the hobby.
It's good for all of us if we can introduce kids to the hobby (if our numbers dwindle so will the companies that make this their business and availability of planes and equipment with it). I for one think it's pretty neat that this twist on realflight might help out here. It would be even better if there was a version priced competitively with video games which offered the online gaming aspects but perhaps lacked some of the other features that are more important to the adult r/c market.