once u get high AR , it isnt worth anymore
however +%block is still very well worth getting, justice lantern and helm of command plus a shield with high block, and block amount, it doesnt need to be stormshield, there are several good ones out there
Not mandatory for sure, using 200str+/60ish vit/MF/resist all belt and feeling fine. Actually i cleared act 3 and most of act 4 before nerf without string of ears too (and generally without -dmg% affixes on any items).
What do you mean? It was never mandatory unless you didn't know how to play and you bought into all these forum posts saying you NEEDED certain items to clear Inferno.
I'm sure I did clear it prenef without a String, Helm of Command or Justice Lantern or even Stormshield and with only 18% block (a Sacred Shield) and no melee/elite/ranged damage reduction that everywhere was said that was necessary, just pure vitality and all resists and no problem.