Question Help with the magic system

If I were building the WU magic system into a point based game, I would do the following:

Abilities:
Well Depth - absolute Essence cap, (Mage buy in - can't be a mage without a well.- could offer several different sizes as limitations to power scale, someone with lesser depth buy high draw could through lots of little fire bolts but only one or two big fireballs... and no world magick at all, solo... someone with a ginormous well and low draw could remake a virgin forest but then have to spend a decade recharging to cast common spells)
Well Draw - how much Essence the Well draws naturally over time. (this is the stat tied to the Wiz mutant rating - so, in theory, this would be where your 'big' pt costs have to go for mutants)

Skills
Well Discipline - how much of the Well can be filled before it begins to bleed off as 'wish fulfillment' or hobgoblins.
Essence manipulation - fundamental skill allowing Essence to be moved to and from the Mage's Well and into storage objects or ritual components.
Spell Crafting - the skill used to manipulate energy in a spell form to create a 'cast' effect
Ritual Casting - the skill used to combine spell energy to collectively form a spell effect.
Lore - Laws of Magick - the use of one of the laws of magick to reduce the difficulty level of a spell cast, solo or ritual format.

Perks
Mystic Contact - someone in the magical planes with whom the Mage exchanges knowledge and Essence, which has the benefit of bypassing the process of transforming Essence with a more 'efficient' exchange. This has the effect of reducing the base essence cost of any spell of that energy type (for example, Fire).
Esoteric Framework - knowledge of a magick system, current or historical which provides a basis for spell casting tradition, this reduces the difficulty of casting within the tradition and raises it when casting outside (or improvising). Some frameworks might have additional costs/benefits (mythos being an 'obvious' one).
Mage Senses - the ability to see (or otherwise sense) the energy patterns of active spells... and to a lesser degree, the natural or unnatural flows of Essence.

Spell Cores
Punch
Weapon
Bolt
Beam
Ball
Blast
Block
Shield
Wall
Barrier
See/Sense
Occlude
Travel
Boost
Unravel (Counterspell)

Spell Extensions / Energy types
Range
AoE
Power Scale
Tripwire
Delay
Seeking
IFF
Dmg Type/Scale: Fire, Cold, Force, Earth, Air, Water, Lightning, Death, Life, Light, Darkness, Shadow, Gravity, Time, Disease, Acid, Sonic


Obviously, finding the right point cost balance between all these is far more challenging than just the basic concept/layout. Even just deciding on the cost difference between say a 'common' elemental source like Fire... and Gravity... or Death... will take work. It shoudn't be too hard/costly to convert one level of Essence to Fire (about as much fire dmg as you can create with a match)... and even 4 or 5 levels of Fire to give you flame of a gas stove. But they'll have to buy the skill to hold the spell together too: say, Fire Beam... with level four Beam and level five Fire, your beam will be unraveling and losing effectiveness at its normal range and may just fail outright because its overpowered. When facing an enemy mage, you will want extra levels in your core spell, a level ten Bolt will hold together to deliver its payload of 5 Fire through a level 5 Unravel or Counterspell. The extra levels may also help you punch through mage armor, PK shells, and that sort of thing.

Basically, learning new spells isn't too hard or costly... but learning them to the degree that they can be combat effective, takes a lot more focus.