"UO is not a class based game like WoW. I love PVP. It's my favourite thing about online games. In WoW, pvp is the least interesting thing to me. Why? Because it's like playing rock paper scissors, but the difference is that you are always choosing the same thing every time you fight. It's possible to win but for the most part, if you are one class, you are doomed to loose vs a particular other one"
Like Zole said. I find this the beauty of PvP in UO, it's not a Level/Class based game. Sure, some people have an advantage using a certain template against another template, and have an advantage with equipment, but the real beauty is that UO is not so RPS that you can't "think outside of the box" to find a way to counter your template's weakness, and defeat your opponent. PvPing against a person who has better equipment/template makes you think, it promotes brains over brawn. It's the opposite in almost all other MMOs, you rely 95% on your' chars Level/Class/Stat Build/Equipment to beat your' opponent. Which is quite boring and unchallenging in my opinion.
Like i said before in another post, if there's any spell in the game that needs to be nerfed, it's Evil Omen. No other spell so thoroughly completely negates 120.0 points in a skill, not only that, but it also requires little mana, low skill requirement, and casts at about the same speed as a Harm, making it near impossible to disrupt. Make it to where we have a chance to resist Evil Omen based on our Resist Spells skill against the caster's SS skill.
I remember back when Lethal Poison (Lvl 5) was only on one creature in the entire game, the Silver Serpent. Back then it was COMPLETELY uncurable, if you got poisoned by a Silver Serpent, the most you could do was run towards town, to make the trip back to your corpse faster.
I have had a Nox Mage for a very long time, since about the time they made it possible to do DP with Poison spell if you had Magery+Poisoning skill. While lately i have been a little dismayed that a Greater Cure Pot had 100% chance to cure my DP, i was in no way complaining about Arch Cure. If another mage could get a Arch Cure off when my poison is damaging him and i'm spamming spells on him, he deserves to cure it. Currently the only way a Nox Mage can do Lethal Poison is if he casts Evil Omen and then Poison while within 3 tiles. That also has the effect of making it impossible to resist (Which needs to be nerfed). Nox Mages don't even need real Necro to do it, just a Midnight Bracers+Necro Jewelry to do it.
For PvP, Arch Cure is used to cure yourself when hit with DP or Lethal. For lower level Poisons, a quick Cure is used. It's nearly impossible to get a Arch Cure off when you're being hit by poison damage, and a fast warrior. Often times it's accompanied with Bleed damage and Fireballs from weapon.
For PvM, normal Cure and Arch Cure is used much the same, except Arch Cure is also applied to groups against certain monsters, such as Yamandons, Serado the Awakened, Dreadhorn and Chief Paroxysmus.
One way to prevent the Infectious Strike or DP Poison spell spamming would be to put a limit on it like there is with the Paralyze Special. After you cure a poison (Whether by spell or bandy), you gain a temporary immunity to that Level of Poison, simulating the spell still cleansing your bloodstream, or to where your body has built a temporary resistance to the poison.
Would also be kind of nice if for every 25.0 points in Poisoning skill you have, you gained a innate immunity to 1 Level of Poison, up to Greater Poison at 75.0 Poisoning. A person with 75.0+ Poison would be Immune to Lesser Poison, Poison, and Greater Poison, but still susceptible to Deadly Poison and Lethal Poison. This would simulate you subjecting yourself to small doses of Poisons over time, thus allowing your body to build a natural immunity to it. There are two types of Poison Resistance in the game. The Vampiric Embrace/Orange Petal Resistance, which the Poison applies to you, but is canceled when it goes to damage you. And the Unicorn Form Resistance, to where Lesser Poison/Poison/Greater Poison do not even apply to you at all. The Innate Poison Resistance i'm suggesting should be the Unicorn Form Resistance type.
I'd imagine it would be nearly impossible for a Mage to survive if i used my Stealth Assassin against them if the Archcure changes are published. Stealth up near to them, mount Ethy Llama, throw DP Shuriken, run up hit with Bleed or Disarm then Bleed from Warfork, hit with Deathstrike so they're not inclined to run, finish them off while they're still trying to cure.