A couple of things I'd love to see (but imagine they are fairly complex propositions)
1. The ability to have multi-coloured runways ie as in real life some runways have varying surfaces - part asphalt, part concrete etc, especially around runway intersections where the crossing runway is a different surface type. (I think AFX allowed different textured over-run areas but not on the actual runway)
2. Much more complex...... Many runways have different touchdown zone markings to those which were standard when FSX was released eg longer runways often have aiming point markings further inset than previous worldwide standard 1000 foot point.
My ideal menu for this would display runway vertically, with boxes opposite each 500 foot section, allowing tick to select features. EG Threshold (choice of Precision, non-precision, numbers only, no markings) 500 foot point (choice of 3 bar USA standard, 2 bar same, 1 bar same, UK style, maybe even Aiming point UK brackets ot intl style aiming point) 1000 foot point (standard aiming point, UK brackets, 3 bar USA standard, 2 bar same, 1 bar same, UK style)
THEN, ideally, an intermediate user-specified location before 1500 foot point in which to display aiming point as at large airports. 1500 foot point then a choice of precision markings again, all the way down to 3000 feet from threshold. eg I could then end up with a runway landing zone with 3 bars, 3 bars, aiming point at 1500 feet, 2 bars, one bar, one bar. Short runways could display eg 3 bar, 2 bar, 1 bar. Hope this makes sense. San Diego has 3 bar, aiming point, 2 bar, 2 bar, 1 bar (but no 1 bar markings at 3000 feet point) The list goes on.......
Alternatively, could ALL styles of touchdown markings be included as placeable objects? similar to Lance Tucker's RWY_MARK.ZIP which I use currently but which is missing international Aiming point bars.