rycanada said:I like what I see. For the save feats, I'd say something like "You cannot raise your base saves past +6 with this feat" but YMMV.
If one of my players came to me and said "these will help me get the character down in rules terms" I'd allow them.
rycanada said:Expanded Spell Research, IMO, is too good even for the lean upward approach. If it allows for unlimited spell progression it "pops the top."
If I were a leaning upward man, I'd allow a feat that gave a "0" 4th-level spell slot, but to learn any 4th level spell requires a feat just for that spell (i.e. DMs can customize which 4th level spells are available by restricting those feats).
nth level spell capability
(Feat: 0 nth level spellslots, prerequisite: Ability requisite 18+, other mental abilities 10+spell level, n-1th level spell capability)
A single nth level spell
(Feat: Ability to learn/prepare/cast a single nth level spell, prerequisite: nth level spell capability)
rycanada said:Is your intent to eventually grant 5th level spells? if it does that, it's definitely not for E6, even leaning upwards. If you want 5th level spells in your game I'd suggest modding E6 to a cap of level 10.