Played a bit more of this over the weekend messing around with the new factions. In the end, I came away with the notion that, with the exception of the new Scrin sides, both the base GDI and NOD factions seemed to be more well-rounded and less vulnerable to specific lines of attack, while their strengths didn't near compensate for their weaknesses.
The single-player campaign is decent, having a good enough time with it. Global Conquest mode is sorta meeehhh but that might be because I just finished DOW Soulstorm's single-player mode which has a lot in common with it, and it just might be burnout.
Haven't gone online yet, going to do so a bit this week.