The PFBC has not created any new flyfishing areas for many years, and are not likely to do so any time soon.
But they have taken other steps that are beneficial, such as ending stocking in some wild trout waters. And they have taken steps to reduce harvest in some streams.
For example, it doesn't seem all that long ago to me that the Little Juniata was stocked and the daily "limit" was 8 fish, min. size 7 inches. Now it's not stocked, it's managed for wild trout, and it's catch-and-release.
The brook trout special regs came about fairly recently, in 2005 I believe.
What can you do? Join TU. PATU has around 11-12,000 members. And it has had some influence. If it had 25,000 members, it would have more influence.
Write letters to the PFBC or specifically to the Fish Commissioner in your region. But I recommend not asking for new fly areas because it won't happen.
Ask for things that will improve the trout population. Reducing stocking over wild trout. Specifically ending of stocking over Class B populations. And reduced harvest limits on wild trout streams in general, not just in "special regs" areas. 5 trout per day is just much too high on any wild trout stream.