I'm replaying the game for the second time. The first time I played, I made mostly Paragon choices, saved the Rachni, saved the council, and installed Anderson as a member.
I'm trying to do Renegade options this time, but I'm kind of wondering what the point is. I already killed the Rachni, but from what I can tell, killing them just means they don't show up in your game in ME2 at all. I'm also considering killing the council and installing a new one, but I hear that just pisses everyone off in the second game.
Is it really worth it to make these different choices? I'm looking forward to making just general renegade choices throughout both games, but I don't really see the point of just killing everyone. Any input to how your various playthroughs went?