Yeah, but it wouldn't exactly be an advantage having independent weapon movement; more like a major disadvantage, I think. Worth any disadvantage for the original GE feel, though. At LAN parties, me and my friends would just decide on selecting the classic mode. I don't know about for online players, though. I can see the issue of not having the same aim system.
I think I enjoy many older games more because how they work mechanically. Like, how Red Alert 1 doesn't have a-move. Or how Age of Empires 2 have a limited number of units per control group. Or how GE have a unique aiming system. Or how the AI pathing in Brood War works.
For me, these things ain't flaws, but is actually what makes these games different/unique and thus fun to play.