One of the things that logistically doesn't fully make sense with SGE is the use of the term "Eukrasia" and what the effect does. Essentially, the idea of making something "Eukrasian" implies you're making something more beneficial to the body, and the opposite of this would be Dyskrasia, which would mean making something more harmful to the body.
Currently, Eukrasia does all of these effects depending on the spell you cast, and Dyskrasia is just your AoE button that never gets touched outside of dungeon trash. So here's a relatively simple yet interesting concept that involves reworking these terms to give SGE more room to be creative with its tools. Before actually going into those concepts, let's first lay a little groundwork:
1. SGE maintains having an AoE button, but we rename it to something else to use the term "Dyskrasia" for our new system.
2. Addersting becomes true DPS neutral in some fashion while also discouraging Addersting dumping during buff windows, such as giving Toxikon a cooldown of 20 seconds. This lets it be used more freely even if you'll still save 1 Addersting for buffs.
3. Krasis and Taurochole are removed as their effects will be utilized for new methods.
With these details in mind, let's talk a little about this simple concept:
Eurkasia largerly stays working the way it does, but the effects it provides will change. Dyskrasia becomes effectively the same--augmenting your next spell cast in a negative fashion. Both of these would also be given an MP cost, and MP management would revolve largely around using your Eukrasia and Dyskrasia effects. With this in mind, let's take a look at how this would affect Dosis and Diagnosis:
Dosis is our main DPS filler button, dealing damage and triggering a kardia heal. While under Dyskrasia, it becomes Dyskrasian Dosis, which is our current DoT, and also provides a Kardia heal. Under Eukrasia, Eukrasian Dosis changes to become a single target heal of higher potency, grants 1 extra Addersgall, and applies Krasis to your Kardia target.
Diagnosis is our standard baby heal, but now also triggers a kardia heal. While under Eukrasia, it becomes the same Eukrasian Diagnosis we're familiar with while also now triggering a kardia heal. Under Dyskrasia, it becomes Dyskrasian Diagnosis, an offensive spell that applies a selfish vuln up on the target for 1 minute that affects only the SGE's damage, grants 1 Addersting, and applies the Taurochole 10% mitigation to your Kardia target.
Our new AoE DPS spell and Prognosis would largely reflect these changes in AoE form. Additionally, we would want to create some method where SGEs can proc a buff that makes their next Eukrasia also generate Addersting, giving you more freedom to use direct healing abilities. Eukrasian Dosis and the AoE DPS spell would be more about providing clutch healing that can replace Pepsis for emergencies, and may not always be used, but creates a potential safety net to catch struggling healers while being more directly effective at being clutch healing unlike Pepsis which can feel quite clunky.
This logic of Eukrasia and Dyskrasia could also extend farther into other GCD tools to further build upon this foundation.