I'm mostly a pve player, so I can't give much of an opinion in pvp and wvw. Looks like it might be a good team skirmisher there, but I'll focus on my pve testing.
On one hand, the SFTA golem results are incredibly disappointing. It's given a giant sword that looks like it's supposed to do damage, and struggles to compete with boon builds. Even herald can hit higher benchmarks.
Is it supposed to be a support? If so, what exactly is it bringing to the table? Stone spirit druid and the healbrand/alacrigade combo can maintain protection better, and any other boons it brings are pitiful. It might be competitive in terms of raw healing with a side of barrier, but I personally just don't see a reason to ever consider this spec for support compared to the others. It's a jack of two trades and master of none.
When I tested its ability to go against strong, single targets, it pales even in comparison to the core revenant, unless I just play it like a core revenant by equipping shiro/jalis and focusing sword/sword. Its sustain if trying to use a power build with greatsword and Alliance makes elementalist look beefy because the small amount of vuln application on the greatsword just doesn't keep up compared to what you can do on sword/sword, meaning battle scars sustain is basically out the window unless you go purely into battle scar generation, which hurts its damage output further. Not only that, you only get up to 3500 healing on the actual heal skill itself in Alliance unless building for healing power. At that point, your main source of survival comes from taking the dodge trait that does healing and barrier. Tree song is the only other source of self-heal and it relies on having conditions.
The skill flipping to represent duality is intriguing on paper, but feels bad in practice. Your ability to flip them on demand has a 20 second cooldown (and lemme tell you, *never* take the trait that doubles the cooldown of the F2. 40 seconds just compounds the problem.) which means often you're likely just going to burn the other skill once it's off cooldown so you can get back to the one you actually want, and the benefits of those skills absolutely are not worth a 20 second wait. The best thing you get is a 10s cd stun break - well, except for the part where Shiro and Mallyx get that with no cooldown if your energy management is good. The other issue, of course, is that it means these utilities aren't very reactive. You either play reactively or just don't bother with your F2 skill at all lest you lose a skill you might need later. If the cooldown of F2 was removed entirely while in Alliance stance, I'd say the class would play way better and be much more tactical in its use.
tl;dr
-Luxon skills need way more damage if we're expected to use them. If this is our power spec, it needs to actually do more damage than core revenant.
-Traits need more useful damage multipliers to accomplish the above better.
-The 20s cooldown on F2 makes using the Alliance stance feel awful to play outside of a strict rotation. Please just remove the cooldown entirely while in Alliance stance. (Potential balance to this, trait that makes it instantly refresh cooldowns gives it a cooldown, using it in other legends gives it a 10s cooldown, roughly consistent with legend swap cooldown)
-If this is a support spec, it needs to bring more to the table that gives us a reason to take it over other support options, including within other rev elite specs.
-Greatsword needs more vulnerability application and faster/more strikes, or the alliance and traits need better sustain options.