I like that it has an easy to use API for running simulations with Python or RStudio (or other languages). The documentation can be improved - some of its sections are quite old which makes them less useful now than they were when first released years ago! It's really good at simulating processes in order from start until end - whether you're using C++/C#/.NET code base OR just python scripts as APIs; this helps reduce errors by making sure your process flows correctly regardless if there was any error during execution time (as opposed to debugging where we have access only once everything finished executing).