QnA discrepancies
Apparently sandbox mode would be too expensive and they aren't sure how much it would be used so aren't willing to do it. No surveys done on that so how can you make a 'data driven' decision there. ...
Forum Discussion
I haven't played anything in JG since it was introduced, but I wouldn't consider it a sandbox mode either. I have saved GW runs to play new characters at 1x and see how the look/work but even then the matchups aren't representative of the competitive game modes.
