IMO the main advantage of a really big stack is the fear it inspires in other players. You can & will put them all in at any time - they should respect that. It gives you more semi-bluffing and total bluffing opportunities. So for that reason you can afford to play a few more hands that you'd normally let go. But I don't think you're really playing more hands for pure value - the expectation on any given hand is basically the same, unless you're using your stack for leverage. Limping hands like suited connectors and small pairs should be played exactly the same way as normal, unless you're going to raise with them and treat them as a stronger hand.