Is your feature request related to a problem? Please describe.
No

Describe the solution you'd like
I'd love to see load condition toggles for game modes like Hardcore and Seasonal (SoD) for the classic era client.
E.g. C_GameRules.IsHardcoreActive if you only want the group/aura to load on hardcore and C_Engraving.IsEngravingEnabled if you only want the group/aura to load on Season of Discovery.
This would be really useful for next weeks fresh release of Era and Hardcore while the Season of Discovery development is still actively progressing at the same time.

Describe alternatives you've considered
N/A

Additional context
N/A