What is the purpose of your nerf, and why are you not allowing specific-attribute spells if you're going to nerf people down to worse-than-SR5 levels?
He is allowing "specific Attribute spells". And even with the nerf the Attribute spells are still in a good spot.
Its not like spells were considered weak in 5th, either.
1. Instead of 8 different spells, you now have one ri.. spell to rule Them All.
2. With the new focused concentration quality you can have 3 of Them active at once. With Xenons nerf it will just be on 2-3 different team mates. -(alright both editions still have sustaining foci, but still.)
3. Compare it to the matrix equivelant infusion of matrix Attribute. There you still have to buy Them separaretely, and they are ALOT Harder to pull of. Looking for +4 Firewall? Thats 8 hits on the test. Looking for +4 str on the troll adept, 3 hits. (To be fair the drain is a lot higher, and its tougher to cast on cybered team mates).
Personally I like what they did to the increase/decrease Attributes. Atleast the part about not having to buy each one seperately. And I think they should have done the same with the other spells too. Like healing spell, Amp it up and it becomed a cooling heal. Armour spell Amp IT up and it becomes a chilling armour, etc.
But as it stands, increase Attributes are too Strong in my opinion. Nerfing them with a max of one per runner seems cool. And also helps the team in general
At the same time the karma Cost for the spells could increase somewhat. Which also would make the magic priority choice a big tougher. As players wouldnt be too tempted to choose a lower magic priority, and then buy the remaining spells for cheap.