Thanks for your reply!
So you mean you want more functional one, right?
To me, size of the image is more important than the number of servers in it.
What I use most in taskwarrior is creating, starting, stopping and closing tasks under projects, then I use hooks written in python which read the changes from stdin and post the task changes to jira and slack.
So if this project could support web hooks, I could write a glue service for it to call when new tasks are created or states are changed.