Blood Mage feedback and suggestions

I definately love the Blood Mage archetype, and I really feel the archetype through the drawback of life cost it has. And with the upcoming alternate Ascendancy Behemoth in PoE1 not being able to use spells, I think sometimes the drawback is the one that can bring the archetype alive.

That being said, the first Ascendancy point Sanguimancy forces players to crit, and I would move it away, and give something else to the Life Remnants. Let's see if you get my idea with these suggestions.

# Sanguimancy (added in edit)
Current:
Grants Skill: Life Remnants
Skills gain a Base Life Cost equal to Base Mana Cost

Suggestion:
Grants Skill: Life Remnants
Skills gain a Base Life Cost equal to Base Mana Cost
2% increased damage for each 5% of life overflown

# Life Remnants
Current:
25% chance to spawn a Remnant on killing an enemy
Spawn a Remnant on Critically Hitting a target, no more than once every 2 seconds

Suggested:
30% chance to spawn a Remnant on killing an enemy

# Gore Spike
Current:
1% increased Critical Damage Bonus per 40 Life

Suggested:
1% increased Critical Damage Bonus per 40 Life
Life Remnant can spawn a Remnant on Critically Hitting a target, no more than once every 3 seconds

# Open Sores
Current:
Your Curses have infinite Duration

Suggested:
Your Curses have infinite Duration
Life Remnant spawn a Remnant from a cursed target once every 3 seconds (comment: a singular Remnant, not from every cursed enemy. I think if the curses are not removed on death, there would be corpses occasionally spawning Remnants.)

# Vitality Siphon
Current:
10% of Spell Damage Leeched as Life

Suggested:
10% of Spell Damage Leeched as Life
-- Choose one --
Life leech values grants an equal amount of life cost refund on hit
Life leech values grants an equal amount to reduced life cost of skills (comment: it is as if part of the spell cost is taken from enemys life)
Life Leech can overflow when not on full life) (comment: its idea was to overshoot to some, but not to allow easy way to top overflow without Remnants or other build ideas or conditions)

# Grasping Wounds (added in edit)
Current:
25% of Life Loss from Hits is prevented, then that much Life is lost over 4 seconds instead

Suggested:
25% of Life Loss from Hits is prevented, then that much Life is lost over 4 seconds instead
Life Recoup effect can overflow (comment: There is a surprisingly large number of life recoup effects in the witch tree)

# The vision

One additional suggestion is to split the Life Cost with skills to the small Ascendancy nodes. The goal for the effect is that we do not immediately have the 100% of mana cost as life cost, but in steps of 20% or 25%.

To clarify, the very first small Ascendancy node would be something like this:
# Life
3% increased maximum life
25% of mana cost is added as life cost

As a mage archetype that uses blood to empower its magic, a gradual increase in the life cost would need to be worth it, and with players that is often with damage increases. I would add the life cost line to a total of 5 small nodes, all before a damage related Ascendancy point. Specifically to spell crit, bleed on crit and life leech small nodes.