My understanding is that it's more common to use several specific versions of WINE that are downloaded inside of POL. Using the system version is just one of many options. So I'd say it's not completely necessary to wait for the system version of WINE to polish up, though it would be even better of course.
Yea just a follow-up to that @Timalex, I just wanted to make sure that our WINE was in better shame. @ikey has done a bunch of improvements (including a full WoW64 build) and I'm a lot more confident in the quality of WINE. I'll talk it over with @ikey later, but I anticipate that I'll land @DataDrake's work.