Most everything sounds good, except not being able to block with a weapon/spell. That's not balance, it's just bad game design.
The only thing I don't like the sound of is being unable to block with a weapon in one hand and spell in the other. Seems kinda of stupid and restrictive to me, I could easily parry one handed while holding something in my other hand >=(
Okay, I do have to say here, you guys are misjudging the situation, and it's only because you aren't thinking about it the right way. They're doing that for balance, and it IS good game design to keep the combat balanced.
To restrict you while holding a melee weapon and a spell is fair because then you aren't OP. Here's my mock-up of the new system:
Consider it this way, you can have a sword and shield - Equal parts standard attack and block (Broken down - +2 melee, +2 block)
Or 1 melee weapon - Strong standard melee attack, and weak block (Broken down - +3 melee, +1 block)
Or 2 melee weapons - additional melee attack power, and weak blocking (Broken down - +3 melee, +1 block)
Or a 2h melee weapon - very powerful attack, weaker block (Broken down - +3 melee, +1 block)
Or a bow - power range attack, and weak block/knockback (Broken down - +3 ranged, +1 block)
Or a melee weapon with a staff - melee attack and ranged attack, with weak block?(assumption) (Broken down - +2 melee, +2 ranged, +1 block) *Unconfirmed how this will end up in-game*
Or a spell and a staff - additional ranged attack power, and no block?(assumption) (Broken down - +4 ranged/touch, +0 block) *Also unconfirmed*
Or 2 staves(?) - double power ranged attack, and weak block?(assumption) (Broken down - +4 ranged, +1 block) *Also unconfirmed*
Or a spell and shield(?) - equal parts ranged attack and block (Broken down - +2 ranged, +2 block) *Also unconfirmed*
Or a spell on each hand - double power ranged attack, weak block?(assumption) (Broken down - +4 ranged/AoE/touch, +1 block) *Also unconfirmed*
Or, finally, a melee weapon and a spell - equal parts attack and ranged attack, both powerful, and no block (Broken down - +2 ranged/touch, +2 melee, +0 block)
Why is this balanced? Each method of using your hands has an inherent strength, and a weakness. If you could hold a sword, use a spell from your magicka, and block with your melee weapon, you would be without weakness by comparison to the other configurations. That's basically equivalent to walking around with a sword and a gun, and blocking power at close range. Broken down - +2 ranged, +2 melee, +1 block So what Bethesda is doing is +2 ranged, +2 melee, 0 block. I know this is just a mock-up scale, but I think the idea is correct. No single hand use fighting style SHOULD equal a total of 5 points of combat power for any character. Thus you must choose a style of combat that you like, and excel at it, but no one style is actually greater than any other.
NOTE: "Sword and staff" will additionally be limited by staff energy, "Double Staff" will be very limited by staff energy, and "Double Spell" will be very limited by high magicka use. That will render the +1 block advantage irrelevant compared to the restriction of use. Therefore assuming all various configurations to be equally powerful +4 styles.Again, this is just my theory on the how and why of the new system, but I think it's a fair estimate of what they're going for to keep the combat gameplay balanced, fun, and diverse, while maximizing replayability. What do you think of it?