Finally got into the PTR. Some thoughts on 1.0.5 after an hour and a half or so of farting around:
-First, Monster Power levels. If you don't enable them, the default setting in Inferno becomes super easy, even after all the defensive nerfs. I'd look sideways at white mobs and they'd die. Elites/champions weren't much harder. Bump MP up even ONE though, and white mob health level goes from like 30k in Act 1 up to 100k. So, it's pretty significant scaling. Champions at MP4 had like 6-7 million, minions were 2-3 million. At MP2, Champs had 4-5 million health, minions around 1.5-2 million. What do you get for bumping up the MP levels? 30% more m/gf ON TOP of any paragon, gear and NV bonuses. The MP bonuses can take you higher than the 300% cap, too. From where my wizard is geared, I think MP2-3 is good for me right now- anything higher and the fuckers just have too much health and take too goddamn long to kill, so it isn't worth it. I'm currently doing around 44k dps.
-Defensive nerfs. Like I said above, if you don't enable the MP option, you'll hardly notice it in my opinion. At higher MP levels, I was definitely noticing losing a bunch of armor and resists from Prismatic Armor. But at default? Even more faceroll than before. Might as well set MP at 1 or 2, it's like 30-60% free M/GF.
-Loot. First, the good news. Nothing lower than iLv 58 loot will drop in Inferno as of now in 1.0.5. The bad news: Itemization is still borked, and finding anything that's an actual upgrade is still pretty rare once you've got your dude well geared. I didn't find anything I would classify as an upgrade in an hour and a half or so, even for my barb who is shittily outfitted. The really bad news: the more I think about it, the more I think this is an intrinsic design flaw for which there is no easy answer, aside from greatly reducing the occurrence of "trash" modifiers that aren't desirable for later game characters on items. Even so, items remain kind of boring, especially compared to the circus like atmosphere you get in TL2.
I didn't find anything relating to the Infernal Machine... still not sure how you build it or whatever.