I would love to see a Trait or a rewok of conjured in general. Something like the Glyphs. Summon a Weapon, based on your Attument you are in. So you still have the option to react to a specific situation. Because we have so many terrible Utility skills it would be nice to have one that can bring alot to the party.
I like this idea of combining Conjured weapons into a single utility. It would give them more versatility for fights, like if you needed a fire field you could use Flame Axe, if you needed to break the defiance bar you could swap to Water and use Ice Bow.
Lets take it a bit further though what if it was a Utility that made Conjured weapons act the same as they do now(CD and Charges) BUT What if it had Shared Charges and as you Swap Elements it also Swaps Conjured Weapons.
So you could saaaaay Swap to Fire and throw down a fire field and then immediately Swap to Air(Through Fresh Air or other) and use Lightning Hammer for constant blast finishers.
No Idea how you would balance this kind of thing though so keeping it simple might be for the best.