OK so... I believe the game would benefit from valuing hp more than it currently does as far as card cost theory.
So I did the calculations, mostly sticking to the current well-established theory except for the HP. The idea is that if HP becomes more valuable, CC will too. Currently a Lightning card can take away 5 hp for 2 quanta. With the current balance that's fine, but leaves little room for other weaker CC. Looking at Thunderbolt, it takes away 5 hp for 1 quanta. This leaves no room for CC variation. What would an upped CC card that does 3 damage cost? 0 quanta? What about 1 damage? -1 quanta? These numbers seem absurd of course. So to open the game up a bit, I've changed up costs a bit.
EDIT
also, of course, after adjusting all of these costs slightly, we would assume that many spells, permanents, and creature abilities would need to be adjusted as well
This is just for fun, speculation, and maybe eventually a better thought-out cost theory.
Creature Value = Attack + Skill Value + HP/2 (round down) (if hp = 0 then - 3) + Elemental Bonus
Upped Creature Value = (same) - 2 quanta
Aether
Spark 3(atk) - 3(0hp) = 0
Immortal 4(atk) + 1(3hp) + 1(immaterial) = 6
Phase Dragon 8(atk) + 3(6hp) + 1(immaterial) = 12
Phase Spider 4(atk) + 1(2hp) - 1(off-ability) = 4
Air (all totals are - 1)
Dragonfly 1(atk) + 0(1hp) + 1(generate quanta) = 1
Wyrm +3(atk) + 1(3hp) + 2(dive) = 5
Azure Dragon + 9(atk) + 3(6hp) = 11
Firefly Queen + 3(atk) + 3(7hp) -2(off-ability) + 4(generate creature) = 7
Firefly +3(atk) + 1(2hp) + 1(generate quanta) = 4
Darkness
Black Dragon 10(atk) + 2(5hp) = 12
Devourer 0(atk) + 1(2hp) + 1(devour) + 1(burrow) -1(off-ability) = 2
Parasite 1(atk) + 0(1hp) + 1(infection) - 1(off-ability) = 1
Minor Vampire 2(atk) + 1(2hp) + 1(vampire) = 4
Gargoyle 5(atk) + 1(3hp) + 1(stone form) - 1(off-ability) = 6
Death
Bone Dragon 10(atk) + 2(5hp) = 12
Virus 1(atk) + 0(1hp) + 1(infect) - 1(sacrifice) = 1
Flesh Spider 3(atk) + 1(3hp) - 1(off-ability) = 4
Vulture 0(atk) + 0(1hp) + 3(scavenger) = 3
Skeleton 1(atk) + 0(1hp) = 1
Mummy 5(atk) + 1(3hp) - 1(off-ability) = 5
Deathstalker 0(atk) + 0(1hp) + 4(
deadly venom) - 1(
off-ability) = 3
Earth (hp/4, round down)
Antlion 2(atk) + 0(3hp) + 1(burrow) = 3
Hematite Golem 4(atk) + 1(6hp) = 5
Stone Dragon 8(atk) + 2(10hp) = 10
Gnome Rider 1(atk) + 0(2hp) + 1(generate quanta) = 2
Graboid 2(atk) + 0(3hp) + 3(evolve) - 1(off-ability) = 4
Shrieker 8(atk) + 0(3hp) + 1(burrow) = 9
Entropy
Maxwell's Demon 3(atk) + 1(2hp) + 2(paradox) = 6
Abomination 5(atk) + 2(5hp) = 7
Purple Dragon 10(atk) + 2(5hp) = 12
Lycanthrope 1(atk) + 0(1hp) + 3(lycanthropy) - 2(off-ability) = 2
Fallen Elf 3(atk) + 1(2hp) + 1(mutation) - 1(off-ability) = 4
Schrödinger’s Cat 1(atk) + 0(1hp) + 1(dead and alive) = 2
Fire (all totals are -1)
Ash Eater 2(atk) + 0(1hp) = 1
Crimson Dragon 12(atk) + 1(3hp) = 12
Fire Spirit 0(atk) + 1(2hp) + 2(ablaze) = 2
Lava Golem 5(atk) + 0(1hp) + 3(growth) - 1(off-ability) = 6
Phoenix 7(atk) + 0(1hp) + 1(ash) = 7
Ash 0(atk) + 3(7hp) + 4(rebirth) = 6
Gravity (hp/5, round down)
Sapphire Charger 4(atk) + 1(5hp) + 1(momentum) = 6
Armagio 1(atk) + 5(25hp) + 1(gravity pull) - 1(sacrifice) = 6
Graviton Mercenary 3(atk) + 1(5hp) = 4
Colossal Dragon 7(atk) + 3(15hp) = 10
Otyugh 0(atk) + 0(3hp) + 4(devour) = 4
Graviton Fire Eater 0(atk) + 1(hp) + 2(ablaze) - 1(off-ability) = 2
Life (all totals are -1)
Emerald Dragon 10(atk) + 3(6hp) = 12
Horned Frog 3(atk) + 1(3hp) = 3
Rustler 1(atk) + 0(1hp) + 2(generate quanta) - 1(off-ability) = 1
Cockatrice 4(atk) + 2(4hp) = 5
Forest Spirit 1(atk) + 0(1hp) + 3(growth) - 1(off-ability) = 2
Forest Scorpion 1(atk) + 1(2hp) + 3(
venom) = 4
Light (all totals are -1)
Photon 1(atk) + 0(1hp) = 0
Golden Dragon 10 + 5(10hp) = 14
Pegasus 3(atk) + 1(2hp) + 2(dive) - 1(off-ability) = 4
Guardian Angel 1(atk) + 3(6hp) + 1(heal) = 4
Crusader 2(atk) + 2(4hp) + 2(endow) = 5
Time
Deja Vu 1(atk) + 0(hp) = 1
Fate Egg 0(atk) + 0(1hp) + 3(hatch) = 3
Devonian Dragon 10(atk) + 2(5hp) = 12
Anubis 5(atk) + 4(8hp) + 2(immortality) - 2(off-ability) = 9
Scarab 2(atk) + 0(Nhp) + 2(devour) - 1(off-ability) = 3
Pharaoh 3(atk) + 4(8hp) + 3(generate creature) = 10
Dune Scorpion 0(atk) + 0(1hp) + 3(neurotoxin) = 3
Water
Chrysaora 0(atk) + 1(2hp) + 1(poison) - 1(off-ability) = 1
Blue Crawler 3(atk) + 1(3hp) = 4
Ice Dragon 9(atk) + 3(6hp) = 12
Toadfish 6(atk) + 2(4hp) + 1(inflate) - 1(off-ability) = 8
Mind Flayer 2(atk) + 1(2hp) + 1(psionic wave) - 1(off-ability) = 3
Steam Machine 0(atk) + 3(6hp) + 3(steam) - 2(off-ability) = 4
Arctic Squid 1(atk) + 1(2hp) + 2(freeze) = 4