Quoted from sethi_i:
Strategy question: Is it always beneficial to shoot the Galactic Away Team when it's lit and you're in a mode?
For the most part yes. GAT modes all score more than their counterparts.
DtD is the spinner. If you're spinner is maxed out, the galactic mode doesn't score that much more. 75k v 68k per spin I believe.
The other consideration is the shots you have to make in the galactic mode vs normal. Most of the normal modes let you make multiple shots to progress vs 1-3 focused shots in the galactic mode.
StE is a good example. Reg StE is pretty easy. Galactic StE is only spinner and warp. If you're struggling with the warp, you might want to avoid.
Nero also falls into this cat. Nero g is shoot the standups. They don't re light until you complete them which can be dangerous. This is a great mode to bring into a mb.