For WordPress 4.2, Scott Taylor has published a blog post so that folks can submit Trac tickets they believe deserve special attention this release.
There are already a few dozen tickets on the thread, but at a minimum this is a good opportunity to get guaranteed eyes on tickets that may have gotten a bit lost over time.
A tip from me if you submit something: give a brief description in addition to the ticket number so others can see without clicking through.
Considering the audience for this blog, I’d say this is also a good opportunity for some of you to go help push tickets through that folks bring up in that thread. There are also some accessibility and mobile focused tickets that 4.2 lead Drew Jaynes would like to give focus on this week.