This is my first posting to the Modern Analyst forum so please be gentle :)

 I am working for an enterprise client that is considering introducing software tools for their business analysis team, and I wanted to ask for recommendations from fellow business analysts.The individual development teams use JIRA for Agile development and the business analysts currently populate Epics and User Stories straight into JIRA which works relatively well for the smaller projects (50-100 User Stories, say).

However, there are some larger projects on the horizon (500+ User Stories) and those projects will need better requirements traceability which I think might be more of a stretch for JIRA which is obviously more of a development tool than business analyst software.

Q. What would you consider to be the industry standard tools for business analysis requirements gathering?
Q. What software would you personally recommend for this scale of project?
Q. Are there any industry standard tools that interface directly with JIRA?