While I liked the space fight in ST Nemesis, I would not want this type of battle in Star Wars. The dogfights in Star Wars are so iconic, that they can't simply abandon them.

I think ROTJ showed really good how this type of space battle works. The capital ships fight each other, while the rebels' fighters slip through a star destroyer's defense and attack critical systems like the shield generator. I don't see why this tactic should be obsolete by the time of VII.

Also, I don't want to see another secret super weapon right after the second death star, so no flagship, please.

That being said, I think your idea fits quite well in the Star Trek multiverse, but be careful not to overdo it on these "super ships", as the effect wears off pretty fast. "If every ship is super, noone will be."