@ AstralFire
I've been following your mod with much interest. I haven't downloaded it yet because I see you're still updating it.
Some comments just based on the description provided here and at the nexus:
In your "warrior's revenge" I miss some anti-mage powers/spells since warriors typically have more trouble against mages than against other warriors. Examples: a cloak powers that protects against fire/shock/frost. A rune-like power that depletes an opponent's magicka upon contact.
I'd also like to ask clarification on the power 'Inner Serenity'. You say that we can 'anticipate an attack and parry it with increased speed'. How do you implement that? With a slow time effect similar to the perk 'quick reflexes'? You also say we 'become invulnerable'. Does that mean that even if we get hit we take no damage? If so, why bothering parrying the attack in the first place?
About 'Colette's revenge', some feedback on the 'mirror ward' spell: with this spell, you're basically adding a new gameplay mechanic to the game that -in my opinion- can make duels between mages much more involving. That's why I would like to suggest that:
1) this spell was a one-handed spell (so that you can both attack and defend in a duel)
2) this spell was an adept spell (if it is a master spell, people wait too much to discover this new fun mechanic)
3) this spell was added to opponent mages (so that you can have this mage duels)
Finally, I'd like to suggest a new game mechanic suitable for spellsword characters: if you have a melee weapon in one hand and a spell in the other, by clicking both mouse buttons simultaneosly the weapon is temporaily enchanted with the spell you have equipped. It would be some sort of 'on-the-fly enchanting'. There was one oblivion mod that did this and it was pretty fun. Could it perhaps be added as a power?
And that would be it. Suggestions aside let me congratulate you on this mod you're creating. It is innovative, it is well thought-out and it seems a lot of fun. Please continue it!
Bonjour! I do appreciate feedback!

1) I think you'll be happy with the coming redesign of the powers, one of which adds a significant resistance buff when warriors use it.
2) The way it functions is by giving you an invulnerability frame. If you're struck during the period of time you are invulnerable, you immediate launch a counterattack.
3) I think you're right about introducing it earlier, and I'll be adding a lower level version that's one-handed, but also doesn't get the bonus to reflection damage. This mod will be fully compatible with ASIS soon, courtesy of Plutoman's generous offer, and enemy mages will be able to use the spell.
4) That new game mechanic you're suggesting is... possibly doable, but I think you'll like where I'm headed with the coming overhaul, which could take me a few more days to get out.