1: no, because ranked pvp requires most of the time a proper stun for a global, UR doesn't need any change. It already got buffed with increased duration, lower cd, and no more health penalty.
2: would be cool, but then we'd be too op for melee.
3: force and tech don't require accuracy, because they're not weapon based, and thus we don't need a change, just learn to use obfuscate properly.. The biggest damaging abilities that obfuscate don't affect are energy burst, which is diminished by cloak of pain by 20%, and dots keep obfuscate up for the whole duration.
Marauder defensives are perfectly fine, the problem lies with sorcs having too much mobility, pt's hitting too hard if you look at how much utility they have (taunts, leap, pull, heavy armor, 25% def, hydraulics, 30m, slows, aoes, aoe hard stun? Wat) and lastly my last problem would beeee hmmm. we'd need a root (CRIPPLING SLASH I MISS YOU) because it's too easy to get away fromus, and mad dash isn't as useful as people think