Thank you, guys
I am writing your suggestions in my To-Do list. Some of them may appear soon, but others will need more time to be added in SCARM.
About buildings – there are several projects in SCARM blog where various buildings and structures can be seen and used, but in O-scale there are only two for now: http://www.scarm.info/blog/tag/o/. Perhaps, I should consider adding of re-scale feature for user-created objects with the figures.
No problem for adding Super-O tracks, but I need a detailed description and dimensions of each track piece in order to be able to create correct library for these in SCARM.
Last but not least – MTH O RealTrax library was updated with adding of 45-degree crossing.
Mixy