Recast spells is my personal favourite topic in this matter. Instead of giving us new icon that will be placed on first aviable position (and yes, im aware that if you know this, you can adjust your actionbar so you know where it will appear ... that is what i do btw) it would be MUCH, MUCH and once more MUCH better, if this new "recast" spell would simply replace the spell icon, or join its upcast in popup window)
Yes! Absolutely! Playing icon hide and seek is a pain, as is recasting a spell with the wrong button. I'm aware of the empty slot trick, but the slot gets used up if you add anything to the hotbar, such as a newly prepared spell, the ability from a new item, etc...
