In PvP, Purge should suppress all buffs for, say, six seconds. One cast of Purge blanks all buffs on the target for six seconds. They have no effect, even their durations stop counting down. After six seconds, they all come back. It would require a major mechanics change (to avoid things, like, Blessing of Fortitude healing the player every six seconds when it comes back) and I don't even know if it's possible, but IMHO it's the best way to do it. A Shaman or Priest can keep someone completely buffless if they want, but it means they have to spend a GCD every 6 seconds.

Defensive dispels should do the same thing. Dispel Magic would suppress for longer than Cleanse. Say, Dispel Magic lasts for 10 seconds while Cleanse lasts for 6. Abolish Poison/Disease would suppress all poisons and diseases for their durations, not remove them. Unstable Affliction should be changed so that instead of instant damage, while it is suppressed, the caster of the spell suppressing it should be silenced and take all the DoT damage of the target. Maybe cut the silence down a little, 10sec silence is brutal.

Because we all know hunters would never cast arcane shot in any pvp situation had the developers not just put a dispel on top of the 1500 damage it does.

This idea is excellent. As an aside, 6/10 second silence would be brutal: but so is completely supressing a warlock's damage by spending 1 GCD every 6/10 seconds. Edit: mass dispel would bring whole new levels of fun: just imagine taking the dot damage of 4 players, because you tried to suppress an ice block

Incidently, such a mechanic already exists: Buffs and Debuffs on pets remain, if the pet is dismissed. So when a pet is summoned/called, it would have the same buffs/debuffs that it had earlier, and the timers would resume. This mechanic is what caused the plague on many servers, and made it possible for Biny to blow up the AH with living bomb.

The difference here is that our dispel resistance requires a heavy investment in our non-healing tree (protection) whereas both Druids and Priests have easy access to theirs on the way down to their deep PvP healing talents. I do agree that straight-up dispel resistance isn't a great idea though, and I wouldn't be surprised if it ended up changing such as Blizzard has changed Silence/Disarm resistance eventually.

One of my biggest pet peeves with dispel mechanics is the oh so wonderful debuff called Forbearance. If I pop AW or BoP or Bubble I get hit by the debuff that prevents me from doing any of the three again for a minute, yet when that Mage spellsteals my wings (which I might also add is quite painful) I'm still stuck with the debuff. The reason Forbearance was put into the game was to break the (quite overpowered) DS, BoP, LoH method pallys used to survive forever pre-1.8. Nowadays, with everything that causes the debuff gone within 3 or 4 seconds, its mainly just a huge annoyance to have your protection/offense removed and be stuck for an entire minute without anything.

They should change it so that the mage also got their share of the forbearance debuff, if you got half of your shield's duration then you and them both get half the debuff.

Last I checked, Mages get the entire Forbearance debuff when they steal the wings. They also get the entire Weakened Soul debuff when they steal PW:S.

Doesn't the mage get the full-duration buff (to a cap of two minutes) when they spellsteal something, as if it were freshly cast on themselves?