What if summoning weapons was a form of “prebuffing” we could do? I really don’t see a reason for such a long cast time. After all it is kinda of a spell you need to spent time using to make it effective. Maybe they become really effective later on, but right now I really don’t see a reason to use summoned weapons over regular weapons.
I had this dream of building a multiclass mage/fighter who exclusively uses summoned weapons and self-buffs, disdaining outside influences like armor and blades as for lesser people.
That is basically a total no-go as long as summoned weapons have a six-second cast time. It just totally ineffectualizes summoned weapons.