Just have a couple questions regarding the Scroll Savant class, just to make sure I am understanding the Scroll Savant's abilities properly.

1. The 5th level ability uses the Scroll Savant's Intelligence instead of the scroll's for determining save DC. So, if my 5th level Scroll Savant with 8 Intelligence uses a Scroll of Controlled Fireball, the save DC will be 13 instead of the usual 16, correct? (Yes, I know that 8 Int on a mage is not a viable build.)

2. The 10th level ability allows a Scroll Savant to use her class level instead of the item's when using scrolls. So, if my 10th level Scroll Savant uses a scroll of Mass Heal, it will heal 100 hit points per target instead of the usual 170, correct?

Interesting question. Not sure if anyone checked negative INT modifiers for Scroll Savant. I can only confirm that that's how it work with a positive INT modifier. Yes.

Even with a scroll savant Pathfinder rules really don't like lower level characters using higher level items and usually have some sort of penalty when doing so. So even scroll savants get shafted in this area, because technically in such a game with mechanics, you would either do the level/dc of your scroll savant class, OR a regular caster which ever is higher. There shouldn't be any penalties to a scroll based class that is more of an expert in using scrolls, to have worst penalties than any other basic casting class.

How logically it should work. Normal casting class's can use scrolls to x efficiency. Scroll savants should NEVER use scrolls to -x efficiency. It should always be x at a minimum. It's like saying a tower shield warrior has less skill and more penalties using a tower shield than a normal fighter that picks up some feats to use one better, or having a normal fighter better using a 2 handed weapon over a 2 handed specialized warrior build. It's just not smart of logical to have mechanics work that way.

Sometimes, mechanics work in illogical ways.

For example, in D&D 5e, and in Solasta: Crown of the Magister, if a priest has emblazoned their holy symbol on a shield and is using it together with a weapon, and is trying to cast a spell:
* If the spell has both somatic and material components, the symbol on the shield provides the material component, and the hand carrying the shield can also be used for the somatic component, allowing the spell to be cast.
* If a spell has a somatic component but no material component, then the hand carrying the shield *can't* be used for the somatic component, preventing the hand from being used to cast the spell.

That's not the only case of illogical mechanics that I've encountered, but I believe it is the most recent (though I've only read about it rather than actually experiencing it myself).