As someone whose main character is an Engineer, and really likes Elementalist as a secondary, there's one big awkward thing both of them share: weapon kits.
Conjured Weapons have some great uses, but they become very awkward to use in more difficult content, since they can easily be placed in a bad spot and prevent easy interaction with some mechanics during tense sequences.
As such, an idea occurred to me on how to make better use of them: making them the Elementalist's version of a weapon swap, similar to how Engineering Kits are active until put away.
Since Ele can't use Weapon Swap in combat, assigning the Conjured weapons to that function would be a sleeker way to integrate it into the standard kit. Swap to "Conjured Weapon" mode, use Attunements to swap weapons, change out Fiery Greatsword for a temporary buff Elite Skill that empowers all Conjured weapons. Mechanically, it leaves them all accessible in an intuitive way that plays off of the Attunement class mechanic. It can also present interesting new mechanics for Weaver in particular (not that it needed to be any more complex but shush) and provide more reliable access to healing and defensive options regardless of primary weapon set. It would also help eliminate the awkward interaction prompt hanging around the battlefield to remove the duration and instead have it function more like an engineer kit, as something that is put on and taken off as needed, rather than having to quickly grab the second copy before the first wears off. Furthermore, it would pack a little more value into Core Ele, keeping them very versatile as the Attunement mechanic feels representative of. The existing skills could be rebranded into a new set of skills for further utility, a one-off useful ability like a projectile shield, or more boon access.