One statement I've seen over and over on these forums and elsewhere are proposals for ?easy? fixes and overarching assumptions about how long implementation for a variety of changes ?should? take.
The reality is, game development is a hugely iterative and time-consuming process, with many people involved along the way. Design takes time, Coding takes time, art takes time, QA takes time: you name it. There are also multiple steps in the pipeline for each and every proposed change and bug fix, no matter how minor, and what issues are being worked on in what order and by who can and do change as new matters arise. Sometimes extra testing is also needed for bugs that come back broken and need to be retested, because we didn't want them to go live with a bad fix.
While there may indeed be a list of known issues and bugs that run alongside some patches, for every one you are aware of, there can be dozens or hundreds being worked on behind-the-scenes that you likely never be aware of. We do things just as quickly as we can, but even then, it's a process that takes time.