I wiggle between a PT mouse and rock...12-15%ish VP$IP, 3-4% PFR, 2-4 agro factor, 20ish% went to showdown, 51%ish won at showdown. BB/100 in the 8-10 range.

These stats (though I don't have 15k hands in PT yet) are similar to what Muxy posted for his 9-tabling set-camper stats...so that's basically what I do.

I'm wondering if this is the right approach to $25 NL play (that's how I played $10 NL as well) or if I need to open things up to get closer to 20% VP$IP.

Hands I play:
AA/KK/QQ - open raise, reraise AA/KK, sometimes QQ depending on raiser, # in pot, amount of raise etc.
JJ/TT - raise in MP+, limp to set early (sometimes raise JJ, depending on table conditions etc.)
99-22 - typically limp to set, call appropriate raises to set and dump otherwise (ocassionally calling down obv cont bets etc.)
AKs/AKo/AQs/AQo - open raise, generally reraise AK
AJs/ATs/KQs - open raise if folded to in mid-late, cont bluff flops depending on board texture, size of field, stacks, etc. - fold in early position, or limp on a passive table, limp behind limpers in LP
AJo/ATo/KQo - open raise if folded to in late position, cont bluff flops as above etc., limp or dump behind limpers
KJs/KJo/QTs/QTo/QJs/QJo - fold in early-to mid position, depending on action before me (will limp along with limpers, fold to no limpers) - limp or raise in late position for steals etc. - don't tend to cont bluff these so much without a strong draw etc.
T9s/T8s/98s/97s/87s/86s/76s/75s - limp in LP behind limpers, sometimes blind steal with these - generally folding in EP and MP unless table is really passive in which case I may limp, but not often - will occassionally call a raise in LP with these hands depending on raise amount, # of callers, stacks, etc.
Q9s/J8s/T7s/96s - limp in LP behind limpers, sometimes blind steal - same as connected and 1-gapped for EP and MP play - tend to dump these to raises unless a good chunk of the table is going at it
Non-suited connectors - very occasionally limp behind a bunch of limpers in LP something like T9o/T8o/98o, but not much more than that

65s or unsuited down to 32s or unsuited - dump outside of BB.
Suited crap (Q8s, T2s, 84s, etc.) - dump preflop outside of BB unraised.

Axs - limp in LP behind a few limpers, dump in EP and MP except on extremely passive tables
Kxs - very rarely limp in LP

All other hands (unless I missed something important) - dump preflop outside of unraised BB.

There are plenty of times where I'll look down at a T9s in a raised pot where I would be the only, or 3rd caller, even in position I tend to dump preflop, figuring that there's not much chance to chase, as I don't chase much at all without good odds.
I don't call raises, other than minraises preflop with easily-dominated hands like KJ/AJ/QT, etc. - basically calling raises with pairs - I'll even dump AQo to an EP raise most times.

Postflop play? Cont bluff missed overs into a max field of 3 in position. Cont bluff missed overs and nut flush draw even out of position into max field of 3. Sometimes check missed overs behind, but generally cont bluff as it has been profitable for me.
Overpairs I play aggressively as expected - I will bet QQ on a Axx flop and lay down to aggression, etc. Nothing out of the ordinary with these - they are all winning hands for me so far. I can lay down to sets, though I have a much harder time doing so on the turn (and typically this is where you can break me) especially on draw-heavy boards where the draw has not yet completed. I don't tend to lay down KK to AA preflop unless it's just butt-obvious that's what is going on (hasn't happened very often at all and not once yet to me at $25 NL).
I play sets+ aggressively post flop, unless there is not much to worry about but this is the exception.
I will reraise with flush/straight draws, though it depends on the strength I can guage of the bettor's hand, strength of my flush draw, # of callers etc.
Can't think of anything else to discuss. I am not a losing player, but I don't consider that I'm all that hot or tricky either.
Just wondering how the heck I can improve from here...I'm a bit of a bankroll baby which may be the biggest deterrent I have to improving - I don't like big losing streaks, and would tend to just ride out runs of bad cards/beats.

May need to grow an extra set of balls

Any advice appreciated - seems like I play a lot of hands, though I don't tend to call raises with very many of them, which is probably where I end up with the 12% ish preflop hands played I'm guessing.