I dont understand what's your problem with fire main. For me, oboro is actually a buff in most cases. You can cast 1st mystery r1 and r2 in addition to your normal combo starter, also +1 auto but no imprison. In normal 1v1 pvp I actually feel stronger with current oboro than before. 9tails already looks like oboro > unparalelled. Death mirage can be tricky, since it was used in addition to tag for Cat, to procc dodge of dodge ninjas so theres a nerf, but a reliable source of tags opens up a lot more hidan and minato teams. Test it first, then complain.

I was talking about general use. Hp of oboro was actually changed somewhere in 3.0, so now only tooltip updated. The only real change is lower cd on mystery and +auto instead of imprison + repulse at the end of the turn. If you were using oboro before, it was mostly as a meatshield. That's a worthy trade-off in my opinion. Bani chakra, unparalelled for general use stays the same, they werent changed at all. The only buff/nerf to certain teams is death mirage, since as I said before it doesnt auto procc dodge ninjas anymore. Tag on the other hand allows different playstyles like better use of kage minato, konan, dpb hidan or 4Ay.