I have 3 different ways of playing PUG:

Utility (Hate control, Spike Damage, Thief)
Tank (Evasion, Nin)
DD (Pure Damage)

My stats carry across all styles, increasing them with gear accordingly.
Main Base stats:
STR 128
VIT 95
DEX 130

Utility
My main play style is pretty much similar to Thief in FFXI. I use abilities like Blindside, Victimize and Attack Buffs for some huge spike damage. Collusion, Accomplice, Chameleon Out of Sight for hate control. Mixed with TP gaining abilities like Invigorate and signature Thief-like actions such as Feint. Most of my actions come from Lnc, Pug and Arc but I use actions from all Dow. With gear and guild marks I can cap my DEX at 174 and STR at like 152 or something.
Good Buffs for Victimize include Ferocity 2, Hawk's Eye and Murderous Intent. I always use Weapons with the highest crit rate to maximize damage on Victimize, Jade Hora at 50.
Playing with this style is really fun because it is always fun to see a ton of damage in one hit while also helping the party out with TP gain (Comrade in Arms) and Hate control actions. Using Pummel is a great way to get the TP needed for 2k Victimize.
Only used in pt play

Tank
I've had a lot of people skeptical about PUG tanking, but have proved them all wrong. With a blink tank I can put guildleves on harder difficulties and tank mobs that a glad would otherwise take too much damage from. The way it works, since I don't really have blink, is it combines evasive actions with stunning actions to allow for my evasive actions to cooldown and recast. Abilities include Featherfoot, Diversion, Leg sweep, jarring strike and light strike. My main attack is light strike to keep the evasion boost going, I also keep defender up since i'm looking to minimize damage. I try to keep an eye on evading so i can counter with jarring strike which hopefully stuns the mob and allows me to recast featherfoot. Diversion is an emergency ability incase i'm caught without shadows, since it is a 1:30 recast.
My main weaponskills are Jarring strike and Feint, which allows me to keep hate pretty easily. I use only Provoke Taunt and Accomplice.
The only downside to Nin tank is the inability to tank more than 2 mobs, therefore, I don't bother with abilities like Warmonger. I stack evasion like mad, using earrings, DEX, and anything that offers high Evasion.
Mainly used in pt play.

DD
This is probably the easiest and most casual form of playing Pug. Main attacks are Heavy Strike and Flurry for a constant barrage of damage. Abilities include anything and everything that buffs weapon skills using a wide range of weapon skills but mainly from PUG actions to maximize effectiveness.
Good for soloing or pt play.

I have a lot of fun building these classes and switching according to what events are happening. Do not neglect the guild mark abilities from the magic classes such as: Complete control and will to power these take attributes from otherwise useless stats and puts them into the main ones. These are invaluable because they give you 5-10 points no questions asked. What do I mean? Example: Say you have 127 points in DEX and want to add another 5 points, that would cost you 20 Skill points, where as if you got Complete control, it takes 5 points away from MND and adds it into DEX. You effectively just increased your DEX by 5 without using SP.