I could write a whole load of text about my decisionmaking re: Strategies, but the tl;dr is 'it is purposely kept to only the DOTs, because if it affected Broil/AOW players who don't want to interact with the system (and would prefer to simply stay in Defense for a more 'stress-free' gameplay experience) would feel like they're 'forced' to interact with the system and they don't want that kind of complexity forced upon them'. You can see Striker earlier in this thread make reference to how he does not want to play with any stance-dance gameplay because he remembers how jank Cleric Stance was. I can't exactly say anything to convince him that these stances would be 'less jank', but the point is, even with Offense affecting only the DOTs, he felt that he would be 'forced' to interact with the Strategies. Adding Broil/AOW to the list would only compound that, and turn more players off from such a system. And that's... kinda the exact opposite of the goal I had in mind (that is, design healer kits that are welcoming to newer players, but also have depth for veterans to explore).
Consider Strategy: Offense less of a 'you want to stay in this as much as possible' and more something akin to... a Recitation for your DOTs, albeit much weaker and with no CD. Where you're thinking of 'camp in Offense, swap to Defense/Emergency to heal, then back to Offense', I intend for the exact opposite. You'd stay in Emergency/Defense for quite a lot of the fight, swapping to Offense only to refresh the DOT before swapping back. You ARE a Healer after all, so I'd argue that it makes a lot more sense to mostly be staying in a Healing-related Strategy for the majority of the fight (to react to sudden healing requirements faster), no? Plus, there's plenty of Strategy-Swapping optimization possible even without having Offense bound to your bars, as IIRC I didn't actually say that the barrier from Selene's Embrace was exclusive with Galvanize, did I? So, theoretically, you could be swapping between Defense and Emergency, just to balance 'healing via Embrace' with 'have fairy set up fairy-barriers on each of the 8 raid members in time for the next raidwide'. Just that alone would add optimization to the job I think. Do you let the fairy's barriers handle the damage, or do you need to top it up with a Galvanise of your own? And if so, where does it come from, a GCD like Succor, or Deploying a Defense-Excogitation? Or what about Defense-Indom? Do you need the Galvanise at all, or would a Deployed Protraction be enough? So many choices, so many ways to handle the situation
Sorry if this doesn't read well, very tired