Wasn't really planning to house rule anything.

The only laws violated by robbing a bank would be mortal government ones. unless you were using no creativity you wouldn't need to violate either the council laws or the metaphysical "rules of magic"

The use of magic, or lack thereof, leads to behavioral and mental adjustment.  So I think you misunderstand me, it's more of a following of the metaphysical laws than breaking of them.  Do X and you will be more likely to do X again.  That is the metaphysical law.  The Laws of the Council exist to make sure there are certain X's you don't commit, they interact with the metaphysical law, but they aren't metaphysical in the least.  That isn't metaphysical at all.  One of the reason the Council Laws exist is supposedly because of the corruptive nature of the actions outlined therein, indicating a moral agenda.  However there are a lot of possible actions which are morally suspect or condemnable that the Laws don't address.  Like theft, or torture, which impose on, ignore or negate the free will of others and the fact that the Council doesn't bother to regulate that along with the quote from Luccio and the consideration that using magic like doing anything leads to behavioral and mental adjustments, thus theft and torture can be just as corruptive as breaking Council Law.  All of that means when considered together that the Laws are not in place to prevent corruption, but to limit power.  They just happen to happily prevent some of the corruptive magics one can perform as well.

So you would argue that you could take a Power that functions similarly to Lawbreaker for other types of magic you might perform?

Or are you saying something more abstract?  I didn't really understand your post.

I never denied the metaphysical truths, I just said they aren't pertinent to the purpose of the Laws.

For instance, using magic to perform a bank robbery is going to leave you with the experience and know how to commit another bank robbery more easily in the future and because you've done it once before you have set a precedent for doing it again.  A metaphysical truth about the corruption of the individual using Lawbreaking magic could be applied to you, but you haven't broken any Laws.

I didn't see any problems except this:

Thaumaturgy: Conquest evocations resemble psychomancy in essentially every way. Which, considering it’s a type of proto-psychomancy, is reasonable. You also gain power over demons, and are able to command the hellspawn as easily as you are able to command men.

Bolting mine, I think you meant rituas or something.

Luccio specifically says that the Laws and the Council are not about good or evil, but about limiting power, and if they happen to do a little good along the way then so much the better.

So, no, I don't agree with you.

I do however agree with you that the use of black magic also happens to be corruptive.  Of course since all magic that you perform reinforces a pattern of thought and behavior because you believe in it entirely...well, depending on your ethics then there's a lot of "legal" soul corrupting magic that people perform all the time.

Ok, a good reason to use more mundane methods than magic to do your "necessary" killing?

Magic is easier to kill with.  It only takes some kind of symbolic connection or the presence of the target in order to pull it off, and as long as you're willing to put the time and effort in it's entirely possible to wipe entire civilizations off the face of the earth.

Ok, true, you can do that with mundane technology too, but not everyone has access to the red buttons.  Wizards by contrast are -all- walking tactical nuke launchers.  Every last damn one of them.  Because they're individuals they can fortunately be limited by the Laws upheld by the Council, but only if the Laws are brutally enforced.

The whole point of the Laws has nothing to do with the corruption of your soul (though it makes a good justification for zero tolerance), it's to limit the amount of power and damage that an individual can accrue.  It doesn't make things fair, it makes them survivable.

Incapacitation is very possible with the narrative control that players share with the GM.  It's pretty much impossible to be forced to or accidentally kill without Compels being involved.  Which in game means that you never have to be in a position of taking Lawbreaker when you don't want to if you never push the boundary cases, like killing in self defense.  The grey areas are grey because they're up for lots of individual interpretation and you wander into them at your peril.

Tesla was a beast at moving and generating energy and way ahead of his time.  Granting the Super Science Sponsored Magic could fit really well.