I like that it is easy to use for both beginners as well an advanced users with many features available such at data sources/sinks where you can extract or add information from different formats of files (csv). It's also very customizable so if there was something missing we could easily create our own functionnality using its web interface which makes development faster than having your team do this manually over email etc.. The UI needs some improvement but overall i think they are working hard towards making improvements by adding new functionalities all time now more then ever before because their community wants them too much! There isn't anything really bad about flowgears product since everything works fine even when running heavy loads without any issue what-so-ever while being able to adapt quickly thanks againt flowsource integration feature allowing us to get up fastly whenever needed.