As a rule of thumb with front load washers, I overdo the repairs. Since I am already spending 150 bucks on hard parts, the little ones get renewed just cuz they're cheap. You don't need jet engine bearings in a washer, just tight quiet ones. That being said, I'm not trying to shave 5 bucks for some Bobo Amazon prime choice top cut.The seal is another story. A little grease in the right place goes a long way with a shaft seal. Small hardware: if it looks bad and has a purpose, it gets renewed. If a bearing gets injured going in and isn't silent, renewal. Chock it up as cheap insurance for a long term repair.
The bearings can be replaced in the Samsung and LG and other stuff like them. Main idea: the races in the tub half are aluminum, so be gentle. The seal also presses into the aluminum, and you can't change the aluminum. Knock everything out from inside the tub hole with a drift. Clean up the empty hole spotless and give it a dusting with assembly lube (I use polyunsaturated Pam). New bearings go in with skill and finesse, or substitute for a cool bearing installing special tool. Something goes south, new tub half required. As a bonus, the new tub half is spotless and not corroded with anything that could be bad mojo down the road.