From a mesmer main point of view about PvP :
Goals are :
There is nerf, there is up but with a post number refine, it adress most common players issues and improve tactic gameplay.
Shattered Concentration : 2 boons removed instead of 1 (due to clone production reduction.).
Furious interruption : 1 sec icd instead of 3 (split for PVE if there are problem with this.).
Critical infusion : back to 5 sec vigor or make every class 3 sec duration.
Evasive mirror : increase the icd to 2 sec instead of 1,5 because it give too easy reflect chain.
Mirror of Anguish : make it pop a charge of 1,5sec distortion ready because a full reset of distortion is too strong IMO.
Restorative Mantras : make the heal dependant of the mantra cooldown time and activate on mantra use instead of cast.
Protected Phantasms : phantasms give mesmer aegis after they get destroyed.
Add somewhere a trait about glamours skills !
Delayed Reactions : reduce the icd (split for PVE is issues.).
All's Well That Ends Well : Increase well's radius to 360.
Chronophantasma : phantasms land 2 attacks before becoming a clone. No longer pop 2 phantasms.
Mirage Cloak : Reduce mirage cloak duration to 0.75 sec instead of 1 sec.
Speed of Sand : Increase the superspeed duration to 1.25 sec instead of 1 sec.
Dune Cloak : make mirage mirror bombs who trigger when a ennemy run into it and apply them bleed,cripple, damage instead of when mesmer run into it. create a mirage mirror when evade.
Mind Stab : Remove 3 boons, does damage per boons removed.
Illusionary Wave : make it bump people on downstate like many other class can do.
Split Surge : halve might and vulnerability duration for clones, increase for mesmer attack.
Phantasmal Warlock : summon only one illusion instead of two.
Chaos Armor : clean one condi on activation.
Chaos Vortex : halve duration for clones, increase for mesmer attack.
Ether Bolt, Ether Blast, Ether Clone : increase damage coef.
Illusionary Counter : Reduce base damage, create only one clone.
Counterspell : add 1 bounce.
Confusing Images : make damage increasing each hit. (example : 10-20-30-40-50-60-70. or every two hit : 10-10-20-20-30-30-40 NB: value aren't factual.)
Ether Barrage : reduce the number of hit to 3, increase the mesmer damage.
Mind Slash, Mind Gash : add 1 more vulnerability stack.
Mind Spike : dispell 1 more boon. (get the 3rd chain in PvP is nearly impossible btw.)
Blurred Frenzy : make blur invul to retaliation or increase the damage.
Illusionary Leap : give me https://wiki.guildwars2.com/wiki/Leap_of_Faith . More seriously : double the clone life or give him 1 sec evade.
Illusionary Riposte : reduce the damage.
Counter Blade : add damage when interrupt.
Phantasmal Swordsman : Condensate the number of attacks.
Temporal Curtain : remove the after cast as long as we are in a meta where many class have instant hard CC aoe or increase the wall duration to 6 sec.
Phantasmal Warden : can he not get killed himself by hitting a war with retaliation ? Increase damage coefficient and (increase phantasm HP or condensate the number of hits (while conserving the bubble duration.)).
Echo of Memory : can we have a utilitary phantasm or a dps phantasm but not a 3 in 1 phantasm ?
Tides of Time : can we drop the wall from behind like deflecting shot ?
Lingering Thoughts : increase the forward distance to 400. (more way to counter but more usefull, also less spammy.)
Axes of Symmetry : remove the break targeting or the evade.
Imaginary Axes : halve clone torment duration.
Cry of Frustration : remove the direct damage. Make the confusion duration and number of stacks dependant of the number of clone like Mind Wrack. (example : 1 clone : 1 confusion stack, long duration -> 3 clones : 3 confusion stacks/clones, low duration.)
Continuum Split : make this skill just usable to reset mesmer life because is too hard to balance core skills around when you have one who can double all of them : increase the duration from 1,5 to 2 sec per illusions, this skill only revert previous health and endurance. No longer prevent capture-point contribution. (Involves redoing PVE chrono balance.)
Mantra of Recovery : increase the healing coefficient on Power Return, make the cast trigger runes effects. (centaur...)
Signet of Illusions : bring back some illusion health increase.
Signet of Domination : make it compete with https://wiki.guildwars2.com/wiki/Binding_Shadow .
Mantra of Pain : 10 sec cooldown, 10 might(10sec),Power Spike do same things as now but add burn and bleed to justify the CD increase.
Mantra of Concentration : Remove quickness on cast. Add 1 sec float effect on ennemy, 240 radius instead.
Arcane Thievery : why 2 sec aftercast with Master of Manipulation ?
Null Field : increase the CD and increase boons/conditions removed.
Feedback : heal mesmer when a projectile is reflected.
Portal Entre : Bring back 60 sec duration but add 30 sec CD if portal Exeunt is used.
Decoy : remove the cancel activation time effect.
Phantasmal Defender : I really prefer the old version who reduce damage on mesmer.
Well of ACtion : pulse 1 sec quickness, 1 sec slow each tic. The last tic pulse 3 sec quickness, 3 sec slow.
Well of Calamity : increase damage per tick and final.
Well of Precognition : reduce the CD to 25.
Well of Recall : pulse 1 sec alacrity, 1 sec chill each tic. The last tic pulse 3 sec quickness, 3 sec Alacrity.
Sand through Glass : increase the distance to 600 or reduce the CD.
Crystal Sands : if it's a aoe damage skill, make it does real damage please.
Signet of Humility : add a moa form training in heart of the mist. Reduce the CD.
Time Warp : make it blockable, reduce the CD.
Jaunt : remove ammo on it. If it's a damage skill, increase the direct damage and condition duration. If it's a mobility skill, remove the confusion&damage, increase the range to 900.