Making rails which would follow slabs can be accomplished by using the "Slab Accessories". What we are missing is an gdl obj. that can retreive data collected by the API.
As for stair/ramp, the current version of stairmaker do allow user to customize railing; But one has to be an gdl expert and dig deep into the script to find out all the variables used.
(Please GS, at least publish some sort of document to inform us what are those variables).
I would suggest GS to improve stairmaker so that it can generate 3D railing path enable railing obj. (new subtype: stair railing) to read and generate 3D model; And users are able to customize the balustrade/baluster in the mean of Macros (maybe with the help of Archiforma?). Thus making it more flexible!
Howard Phua
Win 10, Archicad 19 INT