Have any thoughts been given to sizing tiles through a handlebar style sizing similar to what is used inside Super Tiles or Power BI visualizations? This has become the standard for sizing visual items in most applications and would be much more customizable to the static dimensions currently offered. Would make much quicker work of designing dashboards.
Not to widen the focus much, but a grid layout underneath would be nice as well. For instance if you know the target device has a viewing area of 6x9 tiles, you could choose an underlying grid area of that size when designing your layout. Snap to grid options, etc.
Feel this would make ST feel much more familiar with other report/visual design tools.