It would be nice to have a "dumb" version just for previews.
We have a studio and part of the team just builds assets, model architecture or build landscape.
Those people don´t render or light the scene, they just need some very simple previews.
They don´t even save images, so that could be disbled too.
Having a full license for that is simply not worth it.
We thought about leaving Corona 7 for them, but issues appear when rolling back versions.