If you're beating the game then you're probably fine to be honest, but opening up in the right places could probably help your win-rate. After all, we're always trying to improve our skill and money-making ability.

I'd be very interested in knowing what your attempt to steal % is, and I'll probably reply with ramblings to deal with that if [when] you post it. I don't feel like I can appropriately address the VP$IP/PFR issue without knowing that piece of information.

Pre-flop I generally flat call in position with SCs and PPs according to the 5/10 rule: if it's less than 5% of the effective stack, I almost always call, and if it's more than 10% of the effective stack, I almost always fold. If it's between 5-10%, then that's a judgment call. Occasionally against a loose MP raise I'll call in position with something like KQs or AJs that I don't think is strong enough for a 3-bet but that I think is still profitable.

The vague explanation for when I 3-bet preflop is when I'm in position and I think my hand is better than half or so of the raiser's range. If you want to look for spots to start opening up your 3-betting, look to 3-bet AQ in LP against MP/LP raises from moderate to loose players. Then you can go from there and figure it out.