I'd like to address the Field of View "Keep Ground in View" comment that Steve made above. To me, the only way to fix this would be multi-monitor support, similar to FSX, but then would the 360 views still work properly without a perspective re-work? Adobe have done a lot of work with Perspective Warp / Crop in Photoshop, but those are still images and not 60fps like RC7.
Whilst the beginners market of Electrics and Foamies is certainly the real-world market, I, on the other hand would push for more of the "aspirational" models, especially more Scale & Turbine versions, and/or an increase in the size algorithms to be even larger than standard 150/200% depending on the model.
More "Truescale" would be awesome too.
But that's the trade off with trying to accommodate many different types of customers' views. My interest is with the the high-end models... the ones that cost WAY more to break than the electrics & foamies, and thus require much more practice!