Note, this thread is pure speculation and does not indicate any specific upcoming content.
Sacred Seals have been somewhat interesting since their inception in April last year, starting out as simple stat boosts and slowly expanding to include special skills exclusive to Sacred Seals (Quickened Pulse was the first), Fortify and Spur skills, and at some point Sacred Seals simply became "flexible Passive Skills". They only later gained the ability to be upgraded to have stronger, or more accurately "max level", effects via the Sacred Seal forge, as well as gaining access to crafting old Sacred Seals we may have missed and a few new seals.
There are now more than 60 unique player available Sacred Seals available to us, and only some of them are skills unique to Sacred Seals (though some are available as effects on personal weapons and personal skills), and with each Tempest Trial and Squad Assault, the number steadily grows. Of course that number is mostly padded out by the variations of stat boosting skills...
I'd like to ask you, what do you think lies in store for the future of Sacred Seals, now that it's been a year and a month? Is there any specific skill or effect you hope gets translated to a Sacred Seal? For the moment, let's discuss Sacred Seals here, those things I remember once being referred to as "items" to be given to a unit in an inventory slot...?
My opinion in the spoiler...