Why have we not gotten something this basic in 8 years?
This idea has been talked about on this discord for longer than I've been a member, this is not a new idea, approach or anything even especially innovative.
Just give us a set of alternative ammo for the rifles. All you have to do is make a second ammo set and make it a different class range, even if it just adds one class.
Say you add a set of ammo to the .270, making it work for 2-6 and change absolutely nothing about the rifle or in game description except the class range and the color of the polymer tipped bullet. That's it, that's all we need to have a massive improvement in gameplay.
Honestly, you don't even have to change the color, just the class range. Anything is better than fixed class nonsense were still dealing with after every other aspect of the game has changed. I'd even be happy to pay normal weapon pack prices.
A couple suggestions
.22-250 add 3-6
.270 add 3-7
.30-30 add 3-7 (the new rifle is a letdown without this)
.300 CM add 5-8
6.5 add 2-6
.45-70 add 6-9
.450 BM add 3-6
.375 add 5-9
.30-06 add 3-7
.308 add 2-6
All of these rifles have been used to take animals in these size ranges with no issues and surprisingly good performance. It's not unreasonable to want to use our favorite rifles for as much of our play time as we want.