Necromancer Jim said:
Then again, you kind of need to go to one extreme for the Paragon/Renegade points to be useful.
I love Mass Effect 2, but it's moral system is flawed due to the fact that it forces you to pick one alignment and you almost need to pick only that one if you want to succeed.
But that isn't true. You can succeed without using the locked blue and red dialog options. You just don't succeed as stylishly.
A few of the loyalty missions could be a problem, I guess, but you don't need your Paragon/Renegade
that high for most of those.
Now, remember, I didn't say pick Neutral options - those always suck. But if you pick a mix of Paragon and Renegade options, and if you lean slightly towards one, then you have plenty to max out one side.
My first playthrough, I maxed Paragon around the halfway point and never needed to choose Paragon points again. I did, because that character was very Paragon, but I didn't need to.
My next time, I played a Renegade character who had a silver tongue - she picked lots of Paragon dialog to smooze, flirt, and manipulate, then made major renegade decisions. She maxed out Renegade right before the last plot mission, but her Paragon side was at half-way filled too.
Anyway, the major plot decisions (Rachnai Live/Die, Council Live/Die, Geth Reprogrammed/Die, Collection Station Blown Up/Salvaged) never require you to have any points at all.
So I'm not sure what you mean by "succeed" - you can easily beat the game without maxing out either Paragon or Renegade. You just can't choose the coolest dialog options (which makes Shepard slightly duller than she would normally be, but doesn't stop her from kicking ass).