The most important thing about soly was that it made my life easier when managing our software projects by reducing repetitive tasks involved with running reports for different stakeholders at various levels within an organisation - all from one place (the dashboard).
I am not sure if there are any downsides but maybe this would have been useful! Also we used Solly primarily because its free version has some limitations compared to other tools like Pega or Jira which were also being considered initially; however once started working through them both options became very similar offering excellent functionality across multiple areas including issue tracking/managing issues relating project management etc., reporting capabilities & dashboards / analytics available via API's allowing integration into 3rd party systems such as Salesforce et al.