To clarify what I was saying (And I am going from your description only):
AE has a single type of energy. You get it from killing mobs, or harvesting stuff out of the ground. It's generally easy to get, and store. With a halfway decent automated mob farm, you have a supply that is more than you'll ever use. The Rituals and spells in AE use very little, to the point that you really have no limit.
2. No. There is no constantly used energy in Arcane Scrolls. Energy is simply stored (and you can actually get the stones back, because they are also used in crafting) in the pouch. Then, once you use a spell, some of it is gone. The only non-constant energy usage is the Anchor Stone, and even that has some math behind it. A single AS spell should be equivalent to a ritual or spell from another mod, otherwise the conversion would be useless.
So ... you did not understand me, or I am not understanding you; this has nothing to do with what I said.
I am saying that if you can store tons and tons of energy in AE, and only use tiny amounts, then to export AE energy to "universal mana" would require a very poor conversion ratio, in the order of thousands.
A single AS spell should be equivalent to a ritual or spell from another mod, otherwise the conversion would be useless
Except ... imagine someone that creates a mod with an ore, and lets you make tools from that ore. But you can generate hundreds and hundreds of the ore, trivially. Would you have that ore convert 1 to 1 to iron?
If energy in AE is dirt cheap, then it needs some sort of uniformity. It would be like saying "Here's an engine, built from 2 redstone, a lever, two iron, and a button, that outputs 5000 ergs per tick". People might think it's too powerful to convert 1 erg to 1 RF.
For my case #3: You had said,
50 Arcane Energy per Arcane Stone. A single Arcane Ore drops 1-5 Arcane Stones. You can also get it from killing hostile mobs, which means a huge passive generation of Arcane Stones simply from dropping mobs 50 blocks or whatever.
So it comes from killing mobs -- similar to blood magic's sacrificing rituals -- or from harvesting special blocks -- similar to harvesting infused stone or aura nodes.
There is one source of mana. Many ways to get it, but all the same.
You don't have a difference of earth mana vs life mana vs death mana vs fire mana etc.
Just as a tech mod might distinguish between radiation, heat, steam, voltage, motion (kinetic energy/momentum), pressure, gravity/height, wind, etc., yet we still get a single uniform interchange, with people who have this as a concern make the converter tiered.