In regards to the male models, the only one that I truly care about from the first game was the Nevec model.
In regards to female modes, I want snow bunny from CE.
The grenade launcher was pretty badass online. Well...let me rephrase that. Grenade launchers were pretty badass. With duel grenade launchers you could launch around 12 bomblets at once, easily covering medium sized maps, one-shotting VS, and quite possibly destroying yourself. The grenade launcher had the highest possible damage for a single shot of any weapon in the game. Quite a bit of a gamble on the other hand.
In regards to awesomeness, the best VS weapons combos were as follows. (The best infantry VS weapons were the VS Rifle, VS Shotgun, Homing Laser, EM laser; in that order.)
1. Homing Laser x2 (Good luck obtaining two of them. With team support + thermal pool; this is as bad as a MW2 AC 130)
2. VS Shotgun x2 (This setup slaughters infantry at close-medium range and one-shots most Vital Suits.)
3. EM Laser + VS Shotgun (Hardballers only. Anti-VS setup. EM laser > Chainsaw > Shotgun > etc.)
4. Duel Gatling Guns (You can't beat the practicality of this setup. Shreds infantry, wears down VS.)
5. Rocket Pod x2; Grenade Launcher x2; Missile x2 (The rocket pod gives you the ability to drop targets behind cover, the grenade launcher can one-shot anything by itself and two give you insane AOE, the multifire missles give you fully automatic rockets.)