I'm disappointed in the Catalyst.
The main benefit of the Catalyst should be about using the Jade Spheres to force the enemy to reposition themselves, and gain some positioning control for yourself or your team. Currently the damage is not there to do this - so actually something like Scourge ends up being a way better option to achieve this. Scourge doesn't require you to build up energy, yet Catalyst does. The payoff is not there.
The F5 Skill feels rushed, and doesn't have a purpose. Compare the F5 mechanic to something else like Holosmith. Holo feels powerful: you get your own unique visuals and you can clearly see when someone is in their Holo Forge. The enemy is obviously in Holo Forge and you can see when he/she is overheating....Now look at what ele gets. You don't even get a Jade Sphere passively floating above you as shown in the Artwork (It's only there when you activate your field, but the field vanishes quickly). The field animations looked pretty in the Trailer but in combat they don't feel as powerful or look as good as other classes. You also have no way of telling your own elemental energy apart from a tiny UI bar above your F5. Not even a nice glow or anything like that? Come on. I understand that the current UI might be a placeholder (Well - I really hope it is) but this feels RUSHED to say the least.
The benefits of F5 don't feel worth it whatsoever. They do not do damage, nor much support right now. The idea is you're supposed to augment and do some crazy stuff, but none of that seems to be working well in PvP at least. Hammer is just not viable. I imagine in Raids it could be useful on non moving targets but that's about it.
Also, you need to build up energy to use it. By the time you end up getting the energy, you're likely dead because you're an elementalist. I much prefer the Holosmith design where you get access to F5 straight off, then have to moderate usage depending on what's going on with combat. The fact you start off weak just makes ele always have to play defensively.
Some of the traits have some interesting combinations with Auras, but you barely get any Auras from Hammer. There are some defensive skills but they are all keeping you in close combat which just promotes a gameplay style that just isn't fun for Eles.
And finally...Wtf is that Elite Skill? Please take a look at this and change it completely. It literally provides some reduced recharge on weapons, and one boon for the exchange of a 120 second cooldown?! That is on the same level as a minor traitline, I got no idea why you thought that was fun.
Recommendations
More self quickness, probably add a trait that gives quickness. Hammer needs to feel much faster and hit MUCH quicker.
More self applied auras - This could be achieved by adding more combo fields onto the skills or making the F5 combo fields last much longer.
Give the utility skills more of a purpose - they just are underwhelming - not enough damage and also don't sustain you much either. They really just achieve nothing.