The What Changed Thread [Spoilers, duh]

So, some more questions:

Can I level up guns all the way to level 10 on a single playthrough on ME3?

Is the sniper-power interaction just like it was on the original trilogy? For example, in ME2, when you activated a power, you would first activate the sniper scope and then fire it. ME3, on the other hand, had you not aim down your sights and fire the power right away.

Did they fix random cosmetic/character bugs on the trilogy, like:

a) Joker wearing Alliance fatigues when doing Tali's Loyalty Mission
b - Joker not wearing his hat during the Ilos approach
c) Weapons on Shepard's casual outfits on the Normandy before landing on the Citadel during the Coup attempt.
d) C-Sec not having their own colors and wearing normal Alliance fatigues (TBH, that's a side effect of me wanting that after playing ME3 Recalibrated)
e) Rotating Aria during Omega's DLC Speech and silent crowd?
f) Tali's vanishing rock
g) Those dirty hands everyone on ME3 had for no reason.
h) Squadmates randomly sliding into you during Anderson's conversation in the Presidium on ME2. (Fixed)

(That's pretty much what I can think of)

Does Conrad Verner still accuse you of pointing a gun to you? If not, how is his encounter on ME2 different because of it?

If disk space was a problem in the original ME2 version, why can't I do Illium before Horizon now in the LE?