I clarified I was only talking about the 10% shield when it comes to the channeling aspect. The person I replied to was talking mostly about the 10% shield not the HoT. So you might want to pay a bit closer attention there :x
As for your other points you can try to time it, but you are always losing a GCD with CU and most things don't hit enough to need the 10% shield anyway.
The server tick just happened before you used it? You didn't get the shield aspect because it didn't proc in time for the hit anyway and you likely lost a GCD.
Use it too early? You are stuck channeling until the hit goes off and lose multiple GCDs.
Tank buster?...some tank busters are cleaves and you'd possibly get yourself killed if you tried to channel your CU for MT.
It's very situational since you only have use for it maybe one or two times a fight even though you could have used it 6 times in a 10 minute fight. While Asylum can be used every time it is off cooldown to cover the tank with regens so more DPS is possible. CU is not useless, but the clunkiness is why I said it sucks :/ waiting and losing GCD's for it to proc the regen by itself even is annoying and to me usually not worth it when you can just cast an aspected helios instead.
I vastly prefer Asylum over CU.
I understand that, but it is just my opinion on it. On AST nothing frustrates me more than sitting channeling waiting for the server tick to happen to get the regen. It is clunky so I don't care for it.
I don't use it always for those. I am paired with a SCH so he just uses Sacred Soil instead and we both DPS and then time AoE heals (the channeling aspect of CU makes it not worth using if you can actively DPS the boss instead).
Yes because...
WHM + AST of course you would use CU for every one of those boss ultimates since WHM doesn't have a 10% mitigation field so that's why I said it isn't really ridiculous that AST has CU. Unless we want AST + WHM to be missing shields for those mechanics you just mentioned :/
Double stacking the same healer job is not supposed to be viable :x it works...on a basic level for casual content because with DF you can't always get two healers of different jobs, but its not supposed to be good or better than 2 different healer jobs together.
The healer pairs we want good and viable are:
WHM + SCH
AST + WHM
SCH + AST
Well it could be nerfed if it had to be tbh it is too situational to be really useful, but it just doesn't need to be nerfed because its usefulness is not overpowered really.
I agree with you on that.
I think it is too soon to say something like this. Haven't played the expansion yet. I agree with you it SEEMS bad...but I try to keep some optimism.
Although I do want to try everything first...honestly WHM adds a lot of reliable DPS while AST's cards are RNG and AST's DPS got nerfed into the ground along with SCH (but even SCH does more) so maybe it is possible WHM's DPS will be high enough where it is comparable to what an AST averages. Just speculation though.
I'm actually debating which to play...I don't like what they did to AST personally...I really love the new WHM AF as well and WHM actually seems more fun to play since their DPS rotation didn't get nerfed quite as heavily.