| 1. Tickets already in review before
| * Many tickets have had some work done on them but have not yet been completed. These tickets represent a large amount of invested effort that has yet not yielded any benefits.
| * As such, completing them may result in proportionally more return for effort.
| * Some judgement needs to be applied in selecting tickets from this category. Just because effort has been invested does not necessarily mean the tickets are particularly valuable to resolve.
| * Some tickets are stalled or abandoned because they are really, really hard (and so probably require lots and lots more effort)
| * A trac report will produce a list of tickets in this category - https://twistedmatrix.com/trac/report/16
| 1. Deferred cancellation
| * Ultimately the vast majority of Twisted-provided APIs that return a `Deferred` should implement cancellation logic rather than relying on the fallback behavior provided by `Deferred` itself.
| * This is a very large number of ''mostly'' small, self-contained tasks.
| * Potentially a GSoC project or OPW project instead of a Fellowship project (lends itself well to beginners)
| * Most tickets for this work have not yet been created