It is really a good idea, I'm just not sure about the big mana cost. If the intent is to make the Seduction power more accessible and easily available having the spell at a hefty 550 Base Cost seems counter intuitive. Otherwise, good mod.
Personally I just start my playthrough by giving myself a ton of magicka, because I think the magicka investment is a waste of time, so I haven't run into that issue. You could alternatively enchant you gear with fortify Illusion, so it costs less.
I certainly like the idea. I usually added the seduction spell via console, but found it still made people aggro if I fed and hadn't waited the full day. Eventually I made a bat file but it wasn't all that great in function. So your solution is much appreciated.
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