They're very necessary changes, though the repair costs one is kind of stupid. But least they didn't go with the option of increasing rez timers. Rez timer's being absolute garbage of a penalty when it goes from usable (3-10 seconds) to just fucking irritating (30 second rez timer). A penalty for death is good, but when it hurts your ability to experiment it's just annoying. Especially when some packs really are just impossible.
But yeah Act 1 I can breeze through super fast and some packs in Act II are just impossible. And this is after a week of grinding and buying gear and shit; the wall is huge into Act II and Act III is even worse (But it's not as crappy of an Act as Act II)