Fortification: I can't imagine myself grinding it. It can't be turned on together with doublestrike, so why bother on melee, and on casters I'd prefer to have skills toggled, for extra concentration, balance, UMD and spellpower. Maybe some tanks would take it, but they have plenty fort from their class enhaments and EDs anyway.
Fast healing: I like the idea of feat, but instead of increased power more stacks should decrease interval between healing ticks.
Energy criticals: meh, no positive, no negative, no force. Thx, I pass.
Doubleshot: I don't like pewpewing, so I'll pass, but even if I'd be an archer or crossbowman, I'd pass too. Manyshot, 10k stars, repeaters, all are disabling/weakening doubleshot, so why bother. Maybe for great crossbow users, if fussilade is not decreasing/disabling manyshot (honestly, I don't know), but then, great crossbow is terrible, compared to repeater, outside of fussilade.
Energy blocking: Anyone blocks anything? The only time I do nothing but hold down shift key is when I'm on ground, and forced escape is on cooldown. This needs to be deleted and replaced with something better.
Arcane alatricity: 5% per past life at least.
Iconic: thanks, I'll pass on it. Unless there is dwarf/duergar iconic added, which I'd farm regardless of its benefits.