So your point is correct and your arguments better because it is your idea? okay.
The tradeoff for having the possibility to use combos is that i need 2 good wands ( or one does no damage ) not always a given + i can use enough combos as a mage as it is.
While using different wands can also hinder you by activating surfaces you did no want ( again a tradeoff ).
-In both cases, allow the use of abilities that require a specific weapon, using just that weapon.
Would make sword + nothing worthless because sword + wand would be superior in every case.
-In both cases, allow Opportunist attacks with just the melee weapon.
Ignoring the tradeoff i mentioned before you now need only 1 good wand ( good enough ) but also can use Opportunist which is a good buff ( you can ignore the con of having to choose a talent as long as most are not worth anyway ) -> sword + wand > wand + wand = wand + nothing
An item without enchantments in the other hand would be like level 1 or 2?
+ I dont need a hybrid build to use a sword in my offhand. Maybe i just wand the stats it gives? Giving us the possibilty to use anything in our offhand while just using the mainhand without a con would just make the offhand a statdumb.
+ show me how 2 wands = wand + sword mathematically in case i dont have 2 wands of the same strength ( which is like always ).