I can’t seem to find the shortcuts for the proportional edit size increase and decrease in 2.8. There is some hint (like P^) at the bottom when enabled but I can’t decipher what it points to.
This was traditionally done with “[” and “]” similar to brush sizes in PS and ZB.
Using the wheel is useless if you are a tablet pen user, which I am.
I wonder if this is overlooked atm, I might submit a bug if this is really missing.