"Triple-Swap" and Display Alternate Weapons
No.
Engineers have the possibility of 5 weapon sets as it is now, elementalists 7. If anything, it’s unfair because they have more than every other class as it is.
That actually goes up to 6 and 8 if you count elites
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Commander by title: Sawnec the Mesmer
Speaking as an Elementalist who is traited for attunement swapping, I think we’ve got a ton of options already, and I don’t think adding more is a good idea. The more moving pieces there are to a build, the harder it is to balance its power level. More complexity doesn’t always make for better gameplay.
That’s a personal taste to some extent, but I think it’s hard to argue with the balance thing, at least.
As for the visual weapon swapping, while potentially cool, could also lead to some very wonky cases. Characters stow weapons when they aren’t using them, so the first thing I’m going to do is equip my mesmer with three different scepters and foci, just to see what happens. It’s not unsolveable, but do be aware that while “two axes, a longbow, and a greatsword” is an easy case to visualize, there are some much goofier ones waiting to happen.