A few ideas to make Ascendant more in line with other classes.

Elementalist:
Gain elemental conflux for 4 sec after killing a unique/rare enemy -> 10% chance to gain elemental conflux on kill

Necromancer:
15% inc effect of offering spells -> Your minions release caustic clouds on death dealing 7% chaos damage per second

Occultist:
1% of es regen per second -> 50% reduced shield recharge rate, your es recharge is not interupted by hits if recharge began recently

Assassin:
10% to gain a power charge on hit against enemies on full life -> 7% chance to gain a power charge on hit if you crit recently.

Saboteur:
20% increased cooldown recovery speed for throwing traps -> 50% reduced trap duration, traps trigger at the end of their duration

Trickster:
20% increased damage while not on full es -> 10% chance to gain a frenzy charge on kill, +1 frenzy charges

Pathfinder:
25% inc damage during flask effect -> 15% increased flask duration and effect

Deadeye:
I think you should revert the pierce changes here, the nerf was an overkill. Maybe just remove the proj speed.

Raider:
10% chance to gain a frenzy charge on kill -> 10% chance to gain a frenzy and endurance charge on kill

Slayer:
10% of overkill damage leeched as life -> Life leech effects are not removed on full life

Champion:
4% reduced damage taken from taunted enemies -> Your hits permanently intimidate targets that are not on full life.

Gladiator:
30% of block chance applied to spells -> 50% of block chance applied to spells.

Chieftain:
Regenerate 2% life per second while you have a totem-> 7% increased strength

Berserker:
1% of conditional leech -> unconditional

Juggernaut:
10% chance to gain an endurance charge when you are hit -> 10% chance to gain an endurance charge on hit

Hierophant:
Gain 10% of maximum mana as max energy shield -> Gain 20% of maximum mana as max energy shield

Guardian:
Every 5 seconds remove status ailments -> Grant armour equal to 250% of your reserved mana to you and your allies

Inquisitor:
Take 8% reduced elemental damage while on concecrated ground -> Critical strikes penetrate 40% of enemy elemental resistances