ok so for dayv, i dont think they will, i have a feeling these are jsut filler/intruduction eps, since there are 6 more eps to come i am guessing we will see 2 more. yeah they might not be furthering the story too much but man are they making these characters way more interesting, really starting to flesh them out. this last one on apollo was very interesting, it really sucks what happened on pageasis i really liked that guy. but yeah i think that pegasis will be gone by the end of the season.
here is my prediction, spoilers:
galactica is going to get in some sort of confrontation with the cylons, theres probably going to be a big battle, during or after the battle, probably during that nuke that six got, will distroy pegasis. and gias (lol is really funny my roommate who i got into the show really dislikes gias, and he calls him gay-ass baltar now lol, he is also scottish and so with the accent its awesome) will be in alotta shit.