I'll definitely agree with the annoyance at Cap and Plastique being dealt with off-panel. On the other hand, their marriage hadn't been mentioned since Extreme Justice when they got married. And, remember, by the time the Wildstorm series hit, Plastique had already started appearing again as a villain. So, in a way, I was kind of glad that they were willing to even address it instead of just ignoring it.
On Cap's characterization, I don't have a problem with the one they used, but it's not the one from the original Captain Atom series. That being said, they haven't used that one since the end of issue 50 of his series.