You won’t be able to clear content with bowazon, because it’s a 5% damage buff (she does 5% of damage instead of 0% and you can’t bring it lower). You won’t be strafing packs of physical immunes with 5% of your regular damage. It would take ages. Same with barbarian, but at the additional cost of taking 25% more damage, so you would have to stack a lot more life leech. So no, there is no alternative to Magic Arrow / Berserk, so physical builds are in the same place
Fire druid already has Stony Tomb and some other new 85 areas. And fire druid is Fire + Physical, so no issues there already
On the other hand, it’s 100% damage buff to cold sorc and lightning sorc (because you can cancel immunity with Sunder + Infinity Conviction aura - Sunder brings it to 95% then Infinity to near zero). So if you buff something that was already S tier by 100% and something that was D tier by 100% the gap widens immensely and favors the same best builds again.
For Rabies it doesn’t change much, because the damage itself isn’t the primary issue in posion builds.
Fire trap - it doesn’t work for traps, because traps are ‘minions’, so their damage is not affected with ‘minus to enemy res’. Trapsins are left out, both fire and lightning. Just kicksin maybe, but they actually need those resistances (and sorcs not really).
So again, I don’t see how it opens up anything. Just buffs the strongest builds.
Also co-op - less incentive to do that since you can clear everything by yourself.
For me it affects the game enjoyment, because I liked to come up with some builds that I found interesting and were able to overcome various immunes and situations (like making some specific melee sorc that uses Famine runeword, etc ), now there would be no point in that either. It just takes out some challenges from the game and makes it boring in the long run. Also favors just a few builds that were already really good.
I liked co-op because in a situation where I couldn’tt clear the game on my own, making a team with a player that uses a different build actually made sense. Now not as much.