Issue trackers are something every development team needs, but no one ever seems happy with. Jira is slow and crusty, Trello doesn't scale well for large organizations, and so on.
If you could manifest it just by imagining it, what would your ideal issue tracker look like?
Bug ? You want to enforce "Steps / Seen /Expected" structure". And maybe hint that people should estimate the severity / criticity / cost to fix.
Feature ? You want to optimize for people discussing the spec, and make it damn easy to know which decisions have been made. Bonus point for baking the "five why" in.
Task ? For developpers, Optimize for splitting the task in smaller chunks, and make it very easy to give dependencies between tasks.
For managers ? Optimize for letting the developpers rank the risk of each task to make it possible to estimate the overall risk of a set of features.
Product Owner ? Aggregate features / tasks into roadmap that compute the percentage of each billable feature that is actually done. Associate a risk to selling something that is in the roadmap, but done done yet. Make it harder fo sales to still sell a feature that had knowingly 2% chance of being done by demo day.
Sales ? Optimize for knowing the assumptions under which they can sell the stuff. Maintain a FAQ and list of caveats for your product ("does it work in China ? How much x do we support ? Etc...)
See a pattern here : every user of a task system expect different things, and it's hard to make a system that transition from a role to another.
Much easier to make another to do list on steroid with a poor text editor, a poor forum, and poor gant chart, etc...