So, I have an idea of how to implement spell making.

I don't think you will be able to combine that many effects, especially if they are conflicting, but it would allow some form of spell creation.

For example you could create a Flames spell with (almost) any magnitude you want. Or create a Conjuration spell that summons three skeletons and a bound sword for however many seconds you want?

How interested in this would people be?

I just asked about this recently in the ck forums.. I'm very interested. I dont mind not combining different types, but at least the magnitude of the spell for starters.
Whats your idea???

My idea involves the use of SkyProc. Basically you'd just iterate through all the spells (that are appropriate anyway), and create different magnitude spells from 0 in increments of X up until Y. Then you'd create a menu with slider stuff (using the SkyUI menu stuff), and use Papyrus to add the appropriate spell to the player.

Somewhat unelegant, but should work.

Beware the fact that the engine loads all plugins into memory at runtime. A 200mb database of spells is a permanent 200mb overhead in-game of memory, at least so far as I've seen.

I wonder how big it would grow . I don't imagine I'll ever actually do this, more throwing the idea out there.

@Ali:
I think you don't need SkyProc to make it happened. If I were to do it, here is a simple plan:
- Create bunch of new dummy spells for player to select. If Skse has a function to rename spell, its great
- Have your script to act as database records (maybe a FormList?) which MagicEffect being created/combined/assigned to these dummy spells
- When player select a custom spell (with OnObjectEquipped Event), do a quick search on that list to get extra MagicEffect/Spell
- Use http://www.creationkit.com/DoCombatSpellApply_-_Actor on target as extra magic effect

As you wish to increase magnitude:
- If Skse has function to change spell's description, that's great
- Have about 4 extra perks per each magic school (with increase power/magnitude and spell cost) with different threshold: 125%, 150%, 175%, 200% or whatever you wish. These perks apply only when you know these spells are equipped

Of course this is a little draft, but I think it maybe a right track