The Elder Dragon passive feels outdated and unnecessarily restrictive in its current form.
Right now, the passive requires you to cast a Draconic Power ability to gain Minor Brutality. In PvE, this has generally been manageable because Minor Brutality could be provided by other sources, such as the Dawn’s Wrath Templar line. With the upcoming changes, however, this is going to put much more pressure on DK tanks to actively use a Draconic Power ability every 20 seconds purely to maintain the passive.
The problem is that many DK tank builds don't naturally use a Draconic Power ability within that timeframe when main tanking. This means you can end up casting an ability solely because you need to refresh Minor Brutality, rather than because the ability is actually useful at that moment.
That feels awkward and contrary to good combat design.
Suggested Change
Change Elder Dragon so that casting any Dragonknight class ability activates the Minor Brutality portion of the passive.
This would preserve the intended identity of the passive while removing the unnecessary requirement to use a specific skill line.
I would also suggest applying this philosophy to the other class passives that require abilities from a specific skill line to maintain group buffs. If the purpose is to reward playing your class and actively using class abilities, requiring a specific skill line every 20 seconds is unnecessarily restrictive.
A DK tank should be able to maintain their class passive by playing their class, not by being forced to slot and periodically cast an ability they otherwise wouldn't use.
This would also make the passive much more flexible across different builds and roles without meaningfully increasing its power.
TL;DR: Elder Dragon should trigger from any Dragonknight class ability, rather than specifically requiring a Draconic Power ability. The current requirement is outdated and creates unnecessary buff-maintenance gameplay, especially for tanks.