I don't think i have seen nerfs to Rifle nade since Beta. I think at some point they increase the cost and they removed the extra range on vet 2 but the weapon behaves equal since it's conception.
Edit:
Unless there's some ninjas, this is the changelog.
Rifle-grenade now cost 25 munitions
Updated AOE profile on Rifle Grenade (
Rifle-grenade munition cost from 25 to 30
Note: this were changes from +4 years ago.
Removed ability max range modifier at veterancy level 2
Grenadiers’ Rifle Grenade ability’s weapon delay decreased from 3 to 2.125
Note: this were changes from +2 years ago.
Don't forget the throw range when suppressed. That applies to all grenades, though.
Not complaining. Just felt it warranted inclusion.