Earplugs are a massive gamechanger
Ffs. 6 years of riding and I've never used ear plugs! I got a pair of reusable ones for $2 I can't hear much of the road with them on. But i can still listen to music and hear calls with them pretty well in my intercom.
Next... almost no fatigue, especially riding through highways and such. I get to where I'm going to not feeling as tired as i usually do. This was a massive change.