Minor nit: Darkvision is a 2nd level spell.
I agree that See Invisibility is fine where it is. It doesn't have to be your first 2nd level spell, but by about 5-7th level you better have it to deal with the Invisible-Flying-Mage(TM) and other such problems. You are going to be expected to be able to handle invisible opponents by then.
By giving it to the Arcane Casters, you are forcing the party to work together. The Wizard spots it, while all the fighter types get to use their Blind Fighting feat to try and hit where the caster is pointing. This assumes the caster doesn't just Glitterdust the invisible opponent.
True Seeing is a lot better in many ways, which would explain why it is 6th level for the arcane casters rather than 2nd level.
One nice thing about See Invisible is it can be made permanent at 10th level. I always do this with my Wizards if I make it to that level.
I agree that See Invisibility is fine where it is. It doesn't have to be your first 2nd level spell, but by about 5-7th level you better have it to deal with the Invisible-Flying-Mage(TM) and other such problems. You are going to be expected to be able to handle invisible opponents by then.
By giving it to the Arcane Casters, you are forcing the party to work together. The Wizard spots it, while all the fighter types get to use their Blind Fighting feat to try and hit where the caster is pointing. This assumes the caster doesn't just Glitterdust the invisible opponent.
True Seeing is a lot better in many ways, which would explain why it is 6th level for the arcane casters rather than 2nd level.
One nice thing about See Invisible is it can be made permanent at 10th level. I always do this with my Wizards if I make it to that level.