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.
Not true, you can take advantage of the elemental combination even with very weak wands, so long as the second one to fire is the stronger one(earth/fire combo the order doesn't matter)
Also, you equally need a proper quality weapon to 'exploit' sword+wand, so you basically negate your own point about the bonuses(if item scarcity is a valid cost/counter to one, it's valid to the other).
And regardless of that, my entire premise for that is that the mechanic should also work, when no enchantment bonuses are present, which it currently does not.
Would make sword + nothing worthless because sword + wand would be superior in every case.
Not true, unlike a lone wand, a sword alone in the main hand would still get better AP to damage ratio than sword+wand(wands deal less damage than swords so sword+wand is also beaten by dual-melee and 2-handed melee on raw damage) the only difference is the elemental distribution of it, which depending on your tactical needs is either a flaw or an advantage, and you can shift between the two freely regardless.
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.
While this is a somewhat valid concern, it being a free stat dump is an infinitely better solution than it being a dead weight.
For an offhand melee to be worth increasing the cost of a wand attack however, it would have to provide a benefit worth of that increase in all scenarios: that means either making Opportunist a baseline talent everyone gets for free, or some other form of damage contribution in a wand+sword scenario.
At an absolute worst, this can be resolved by always forcing the 'enchanted melee' attack, but that would be counter intuitive towards equipping a range weapon as a main form of attack.
show me how 2 wands = wand + sword mathematically in case i dont have 2 wands of the same strength ( which is like always ).
As explained above, so long as the second wand to fire is the stronger one(wind in water+wind combo, either one in fire+earth), you will come out ahead of using the same wand twice.
Further more, as mentioned even earlier, you cannot use an argument against/in support of a stance, that equally applies to the opposite one.
The same rules that work against a Wand+Wand combo, work against a Wand+Sword one(you need to actually find the right off hand), whereas you have nothing that would go against the simple fact that right now, when no enhancements are present(which is actually very common if you craft gear, rather than find it), the second item is neither worth equipping, nor interacts with the game world as expected.
