I'm not a well versed mult-species fisherman, so take this for what is worth. I've been fishing panfish and walleye almost exclusively since I was about 7. I've fished the Wolf River for WB and eyes for about the last 20 years. I'm in my early 30's.
I never have been nor will I ever be a trophy fisherman, I don't fish to put mounts on a wall. I like eating fish. However, that doesn't mean I take small fish or keep pre spawn females.
As far as I can tell the Bago system is getting better, or maybe I'm just getting better at catching those fish.
Most of my fishing has been the upper and lower parts of the Root River and the Racine piers and harbors.
The absolute best fishing of my life will never go back to the way it was when I was a kid and teenager. Memories of filling buckets upon buckets of Lake Michigan Yellow Perch are now a pipe dream. I feel like I have to travel and search for fishing like it was when I was young. Bass and northern were never on my radar because of my love of panfish. I now know better, northern are tasty but I can't speak to their abundance.
Current day it's still panfish, walleyes, and salmon that get my attention the most. I would like to get better at the salmon thing though.
With that said the last couple of years I've began to diversify my targeted species and I still think fishing overall was "better" when I was younger.