I don't know if anyone has noticed, but there's been a wave of new officials coming up the ranks in the last few years that are now joining junior. Kind of a "youth movement" if you want to call it that.
So you're going to see a lot of newer guys in the next few years.
As for improving officiating, there are supervisors in the stands doing just that. Not only are they improving them, but they know what to actually correct, unlike the fans in the stands. Believe it or not, there's more to officiating than just the penalty calls that everyone loses their minds over.
If your complaint wasn't listened to, that means it wasn't a good complaint. Pretty simple. If the league gets a complaint that's legitimate, they're not just going to ignore it.
The larger problem isn't improving officiating, it's educating the fans, parents and coaches on what makes a good and bad referee. For the most part, the guys in junior are pretty flawless, so you aren't gonna find much to improve on. Just like the players, there's a reason why they're there.